Chronologically first, early; of or pertaining to the beginning, cause or origin.
Spatially first, placed at the beginning, in the first position; especially said of the first letter of a word.
To sign one's initial(s), as an abbreviated signature.
A distinguished initial letter of a chapter or section of a document.
onset, part of a syllable that precedes the syllable nucleus in phonetics and phonology.
The first letter of a word or a name.
In plural, the first letter of each word of a person's full name considered as a unit.
Earliest formed; fundamental.
first or earliest in a group or series.
main; principal; chief; placed ahead of others.
Relating to day-to-day care provided by health professionals such as nurses, general practitioners, dentists etc.
Relating to the place where a disorder or disease started to occur.
Illustrating, possessing, or characterized by, some quality or property in the first degree; having undergone the first stage of substitution or replacement.
A directly driven inductive coil, as in a transformer or induction motor that is magnetically coupled to a secondary
A primary school.
A primary election; a preliminary election to select a political candidate of a political party.
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.
Any flight feather attached to the manus (hand) of a bird.
A base or fundamental component; something that is irreducible.
The most massive component of a gravitationally bound system, such as a planet in relation to its satellites.
The first year of grade school.
A primary colour.
Primary site of disease; original location or source of the disease.
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.
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 ideologically extreme.
To take part in a primary election.