| Apex | driving | The point at which a car is closest to the inside of a corner; the geometry of the apex determines corner entry and exit speed. |
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| Bargeboard | aerodynamics | Vertical flow-conditioning surfaces between the front wheels and sidepods, largely legislated away for 2022. |
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| Blistering | tyres | Tyre surface failure caused by overheating from the inside out. |
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| Blue flag | flags | Shown to a driver about to be lapped, requiring them to let the faster car past. |
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| Box | strategy | Radio instruction to pit, from the German 'Boxenstopp'; used because it is easier to hear than 'pit'. |
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| Brake bias | setup | The front-to-rear distribution of braking force, adjustable from the cockpit. |
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| Catalogued | confidence | Not checked by anyone, here or at a source: a photograph that Wikimedia Commons editors filed under a category named for the chassis. A category also holds replicas, scale models, show cars and museum mock-ups, and nothing here can tell them from the car that raced. Never present it as the car without a person looking first. |
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| Chicane | circuit | A tight sequence of corners inserted to slow cars, usually retrofitted for safety. |
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| Classified | results | Ranked in a race's final order. A driver who retired is still classified if they had covered enough of the distance - under the current rules, 90% of the winner's laps - which is why a car that stopped can have a finishing position. |
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| Clean air | aerodynamics | Undisturbed airflow; a car in clean air produces full downforce, one following closely does not. |
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| Concorde Agreement | governance | The commercial and governance contract between the FIA, the commercial rights holder and the teams. First signed 1981. |
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| Cost cap | governance | The annual spending limit on team operations, introduced in 2021 and excluding driver salaries, marketing and the three highest-paid staff. |
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| Degradation | tyres | The loss of tyre performance over a stint, distinct from wear; Pirelli's tyres are specified to degrade deliberately. |
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| Delta time | sporting | A target lap time drivers must not beat, used to enforce Virtual Safety Car conditions. |
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| Dirty air | aerodynamics | The turbulent wake behind a car, which reduces the downforce of a car following closely. |
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| DNF | results | Did not finish: retired from the race and not classified. A driver who retires late enough is still classified and has a finishing position (see Classified), so a DNF is a retirement with no place in the result. |
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| DNP | results | Did not practise: entered for the event but took part in none of its sessions, so the entry has no time and no result - even where the car itself ran, in another driver's hands. |
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| DNPQ | results | Did not pre-qualify: eliminated in pre-qualifying, a session some events held before qualifying itself when there were too many entries - above all in the late 1980s and early 1990s. A car that failed it never reached qualifying. |
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| DNQ | results | Did not qualify: an entry that did not earn a place on the grid - too slow when more cars were entered than were allowed to start, or outside the 107% limit - or that never had the chance, through an accident, an injury or a car taken away. |
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| DNS | results | Did not start: entered and at the event but not in the start of the race - a car withdrawn or broken before the start, a driver hurt in practice, or a car handed to another driver. |
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| Downforce | aerodynamics | Aerodynamically generated load pressing the car onto the track, increasing grip at the cost of drag. |
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| DRS | aerodynamics | Drag Reduction System, 2011-2025: a driver-adjustable rear wing flap usable within one second of the car ahead in designated zones. |
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| DSQ | results | Disqualified: took part and was then removed from the result, usually for a technical or sporting breach found afterwards. In a championship table, a driver or team removed from the classification - Michael Schumacher in 1997, whose points stand without a position, and Tyrrell in 1984. |
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| ERS | power unit | Energy Recovery System: the electrical part of the power unit. |
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| EX | results | Excluded: removed by the stewards from an event or a session - a car found underweight or illegal, or one that missed a weight check - so it has no result. In a championship table, a team or driver excluded from the classification altogether, as McLaren was from the 2007 constructors' championship. |
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| FL | results | Fastest lap: the quickest single lap of the race, marked in its own column on a classification. It has earned a championship point in two periods, 1950-1959 and 2019-2024. |
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| Flat spot | tyres | A locally worn patch on a tyre caused by locking a wheel under braking; produces vibration severe enough to force a pit stop. |
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| Formation lap | sporting | The lap from the grid to the grid before the start, used to warm tyres and brakes. |
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| Ground effect | aerodynamics | Downforce generated by accelerating airflow under the car through Venturi tunnels. Used 1977-1982 and again from 2022. |
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| Halo | safety | The titanium cockpit protection structure mandated in 2018, able to withstand around 12 tonnes. |
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| HANS | safety | Head and Neck Support device, mandatory since 2003, tethering the helmet to the shoulders to prevent basilar skull fracture. |
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| High | confidence | A well-established record, consistently published in official sources over many years. Safe to rely on; cite the official archive if publishing. |
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| Homologation | technical | FIA certification that a car, part or circuit meets the regulations. |
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| Lift and coast | driving | Lifting off the throttle before the braking point to save fuel, energy or brake temperature. |
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| Marbles | tyres | Discarded rubber off the racing line; drivers avoid it because it destroys grip. |
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| Medium | confidence | Correct in substance. An exact figure or date may have drifted or may move with the current season. Confirm before publication. |
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| MGU-H | power unit | Motor Generator Unit - Heat, recovering energy from exhaust gases via the turbocharger. Used 2014-2025 and removed for 2026. |
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| MGU-K | power unit | Motor Generator Unit - Kinetic, recovering energy under braking and deploying it as drive. |
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| NC | results | Not classified. In a race, a driver who covered too little of the distance to be given a position - usually one still running at the end, a retirement being a DNF, though a source sometimes prints NC for a retirement too. In qualifying, a driver with no time that counts: none set, or one outside the 107% limit. |
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| Overcut | strategy | Staying out longer than a rival, using clear air to build a gap before stopping. |
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| Overtake Mode | sporting | The 2026 replacement for DRS: additional energy deployment for a car within one second at the detection point. |
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| Parc ferme | sporting | The state, from the start of qualifying, in which set-up changes are prohibited without a pit-lane start. |
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| Pit window | strategy | The lap range in which a stop makes strategic sense. |
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| PL | results | Pit lane: in the Grid column, a driver who started the race from the pit lane rather than from a grid slot. |
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| Plank | technical | The wooden (Jabroc) skid block under the floor, introduced in 1994 to enforce a minimum ride height. Excessive wear means disqualification. |
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| Pole position | sporting | First place on the starting grid, awarded on qualifying time. |
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| Porpoising | aerodynamics | Violent vertical oscillation caused by ground-effect stall and recovery; the defining problem of the 2022 season. |
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| Power unit | power unit | The full hybrid assembly since 2014: internal combustion engine, turbocharger, MGU-K, energy store and control electronics (plus MGU-H until 2026). |
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| Reference | confidence | Taken from a published secondary record rather than an official one: F1DB for almost all of it, and for most of the rest Wikipedia's season results tables or its per-car and per-topic articles. A few regulation limits read from the FIA's own regulations sit here too, and the qualifying formats, read from those regulations and from Formula 1's own history of qualifying. Where a second source held here covers the same fact the two are compared on load - a race's winner, where one is already held from another source, against F1DB's, for one - but some tables at this tier, the entrant, engine and sprint registers among them, have no second source, so the tier alone does not say a row was cross-checked. Reliable; not official under this database's policy, so cite the FIA/F1 archive if publishing. |
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| Shared drive | results | Two or more drivers taking turns in one car in the same race, which the championship's early seasons allowed. Each is credited with the car's result, so a classification can show one position more than once. |
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| Slipstream | aerodynamics | The low-drag region behind a car, used to gain speed before an overtake. |
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| Sprint | format | A short Saturday race introduced in 2021, currently run at six events, with its own qualifying session since 2024. |
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| Stewards | governance | The panel of four officials, including one former driver, who rule on incidents and apply penalties at each event. |
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| Superlicence | governance | The FIA licence required to race in F1, earned through a points system across junior categories. Introduced in its current form in 2016. |
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| Tow | aerodynamics | The British term for slipstream. |
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| Track limits | sporting | The white lines defining the circuit; a lap is deleted if all four wheels go beyond them. |
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| Undercut | strategy | Pitting before a rival and using fresh-tyre pace to emerge ahead when they stop. |
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| Unverified | confidence | Placeholder, disputed, or known to be incomplete. Never state as fact. |
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| Verified | confidence | Checked directly against an official FIA or Formula 1 source during database construction. Safe to state as fact and to cite. |
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| Virtual Safety Car | safety | A field-wide delta-time speed restriction introduced in 2015, allowing yellow-flag conditions without bunching the field. |
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| Wind tunnel restriction | governance | Aerodynamic testing time allocated in inverse proportion to championship position, to compress the competitive order. |
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