ETYM French instant, from Latin instans standing by, being near, present. Related to Instant.
A point in duration; a moment; a portion of time too short to be estimated or measured; also, any particular moment; SYN. moment, flash, second.
ETYM French moment, Latin momentum, for movimentum movement, motion, moment, from movere to move. Related to Move, Momentum, Movement.
1. A particular point in time; SYN. minute, second, instant.
2. An indefinitely short time; SYN. minute, second, bit.
3. The moment of a couple is the product of its force and the distance between its opposing forces.
4. The n-th moment of a distribution is the expected value of the n-th power of the deviations from a fixed value.
Basic si unit (symbol sec or s) of time, one-sixtieth of a minute. It is defined as the duration of 9,192,631,770 cycles of regulation (periods of the radiation corresponding to the transition between two hyperfine levels of the ground state) of the cesium-133 isotope. In mathematics, the second is a unit (symbol ˛) of angular measurement, equaling one-sixtieth of a minute, which in turn is one-sixtieth of a degree.
1. 1/60 of a minute; the basic unit of time adopted under the Systčme International d'Unités; SYN. sec.
2. A 60th part of a minute of arc; SYN. arcsecond.
3. Following the first in an ordering or series:
4. The official attendant of a contestant in a duel or boxing match.
5. An endorsement of a motion, in parliamentary procedure; SYN. endorsement, approval.