primary

Fetched 2026-10-26 (cache).

Synonyms: primacy, primar

Antonyms: primacy, primar

Related words from Datamuse; suggestions, not definitions.

Adjective

1. {{cap|first}} or [[earliest]] in a group or series.
2. {{cap|main}}; [[principal]]; [[chief]]; placed ahead of others.
3. {{lb|en|premiere|premier}}
4. {{lb|en|geology}} Earliest formed; [[fundamental]].
5. {{lb|en|chemistry}} Illustrating, possessing, or characterized by, some quality or property in the first degree; having undergone the first stage of substitution or replacement.
6. {{lb|en|medicine}} Relating to the place where a disorder or disease started to occur.
7. {{lb|en|medicine}} Relating to day-to-day care provided by health professionals such as nurses, general practitioners, dentists etc.

Noun

1. {{lb|en|political science}} A [[primary election]]; a preliminary election to select a political candidate of a political party, or the first round of a two-round election.
2. The first year of [[grade school]].
3. A [[base]] or [[fundamental]] component; something that is [[irreducible]].
4. The most massive component of a gravitationally bound system, such as a planet in relation to its satellites.
5. A [[primary school]].
6. {{lb|en|ornithology}} Any [[flight feather]] attached to the [[manus]] (hand) of a bird.
7. A [[primary colour]].
8. {{lb|en|military}} The first stage of a [[thermonuclear weapon]], which sets off a [[fission]] explosion to help trigger a [[fusion]] reaction in the weapon's [[secondary]] stage.
9. {{lb|en|aviation}} A [[radar]] return from an aircraft (or other object) produced solely by the [[reflection]] of the radar beam from the aircraft's skin, without additional information from the aircraft's [[transponder]].
10. {{lb|en|medicine}} The [[#Adjective|primary]] [[site]] of a [[disease]]; the [[original]] [[location]] or [[source]] of the disease.
11. {{lb|en|electronics}} A directly [[driven]] [[inductive]] [[coil]], as in a [[transformer]] or [[induction motor]] that is [[magnetically]] coupled to a [[secondary]].

Verb

1. {{lb|en|US|politics|transitive|intransitive}} To [[challenge]] (an [[incumbent]] [[sitting]] [[politician]]) for their [[political]] [[party]]'s [[nomination]] to run for [[re-election]], through running a [[challenger]] [[campaign]] in a [[primary election]], especially one that is more [[ideological]]ly [[extreme]].
2. {{lb|en|US|intransitive|transitive}} To [[take part]] in a [[primary election]].

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.