main; principal; chief; placed ahead of others.
Earliest formed; fundamental.
first or earliest in a group or series.
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.
Next to the first in value, power, excellence, dignity, or rank; secondary; subordinate; inferior.
Number-two; following after the first one with nothing between them. The ordinal number corresponding to the cardinal number two.
Being of the same kind as one that has preceded; another.
After the first; at the second rank.
After the first occurrence but before the third.
The agent of a party to an honour dispute whose role was to try to resolve the dispute or to make the necessary arrangements for a duel.
An additional helping of food.
Something that is number two in a series.
A second-class honours degree.
One-sixtieth of a minute; the SI unit of time, defined as the duration of 9,192,631,770 periods of radiation corresponding to the transition between two hyperfine levels of caesium-133 in a ground state at a temperature of absolute zero and at rest.
A unit of angle equal to one-sixtieth of a minute of arc or one part in 3600 of a degree.
The interval between two adjacent notes in a diatonic scale (either or both of them may be raised or lowered from the basic scale via any type of accidental).
A manufactured item that, though still usable, fails to meet quality control standards.
Second base.
A short, indeterminate amount of time.
Something that is next in rank, quality, precedence, position, status, or authority.
One who supports or seconds a motion, or the act itself, as required in certain meetings to pass judgement etc.
A chance or attempt to achieve what should have been done the first time, usually indicating success this time around. (See second-guess.)
The place that is next below or after first in a race or contest.
A Cub Scout appointed to assist the sixer.
The second gear of an engine.
One who supports another in a contest or combat, such as a dueller's assistant.
To climb after a lead climber.
To assist or support; to back.
To agree as a second person to (a proposal), usually to reach a necessary quorum of two. (See under [[#Etymology 3]] for translations.)
To agree as a second person to (a proposal), usually to reach a necessary quorum of two. (This may come from the English adjective above.)
To accompany by singing as the second performer.
To follow in the next place; to succeed.
To transfer temporarily to alternative employment.