Definition of second in English

WordNet

Noun Plural: seconds
second - a speech seconding a motion; "do I hear a second?"
		secondment, endorsement, indorsement
		agreement compatibility of observations; "there was no agreement between theory and measurement"; "the results of two tests were in correspondence"
second - 1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites
		sec, s
		time unit, unit of time a unit for measuring time periods
		min, minute any of the forms of Chinese spoken in Fukien province
		leap second a second (as measured by an atomic clock) added to or subtracted from Greenwich Mean Time in order to compensate for slowing in the Earth's rotation
second - following the first in an ordering or series; "he came in a close second"
		rank a row or line of people (especially soldiers or police) standing abreast of one another; "the entrance was guarded by ranks of policemen"
second - a 60th part of a minute of arc; "the treasure is 2 minutes and 45 seconds south of here"
		arcsecond
		angular unit a unit of measurement for angles
second - the official attendant of a contestant in a duel or boxing match
Verb seconds, seconding, seconded
second - give support or one's approval to; "I'll second that motion"; "I can't back this plan"; "endorse a new project"
		back, endorse, indorse
		back up, support make a copy of (a computer file) especially for storage in another place as a security copy; "You'd better back up these files!"
second - transfer an employee to a different, temporary assignment; "The officer was seconded for duty overseas"
		reassign, transfer transfer from one place or period to another; "The ancient Greek story was transplanted into Modern America"
Adjective second, seconder, secondest
second - a part or voice or instrument or orchestra section lower in pitch than or subordinate to the first; "second flute"; "the second violins"
		music musical activity (singing or whistling etc.); "his music was his central interest"
second - coming next after the first in position in space or time or degree or magnitude
		2nd, 2d
		ordinal being or denoting a numerical order in a series; "ordinal numbers"; "held an ordinal rank of seventh"
Adverb
second - in the second place; "second, we must consider the economy"
		secondly

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Wiktionary

second (Noun)
A manufactured item that, though still usable, fails to meet quality control standards.
second (Noun)
An additional helping of food.
second (Noun)
Another chance to achieve what should have been done the first time, usually indicating success this time around.
second (Noun)
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.
second (Noun)
The second gear of an engine.
second (Noun)
second Second base .
second (Noun)
A dueller's assistant.
second (Noun)
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; one- sixtieth of a minute.
second (Noun)
A unit of angle equal to one-sixtieth of a minute of arc or one part in 3600 of a degree.
second (Noun)
A short, indeterminate amount of time.
second (Noun)
The attendant of a contestant in a duel or boxing match, who must be ready to take over if the contestant drops out. In the case of a duel, the seconds may also fight each other at 90° to the other contestants.
second (Noun)
One who agrees in addition, or such a motion, as required in certain meetings to pass judgement etc.
second (Verb)
To transfer temporarily to alternative employment.
second (Verb)
To assist or support; to back.
second (Verb)
To agree as a second person to a proposal, usually to reach a necessary quorum of two.
second (Verb)
To follow in the next place; to succeed.
second (Adjective)
The ordinal number corresponding to the cardinal number two.
second (Adjective)
Number- two; following immediately after the first one.
second (Adjective)
That which comes after the first.

Webster DictionaryWebster's Unabridged Dictionary 📘

second (a.)
Immediately following the first; next to the first in order of place or time; hence, occuring again; another; other.
second (a.)
Next to the first in value, power, excellence, dignity, or rank; secondary; subordinate; inferior.
second (a.)
Being of the same kind as another that has preceded; another, like a protype; as, a second Cato; a second Troy; a second deluge.
second (n.)
One who, or that which, follows, or comes after; one next and inferior in place, time, rank, importance, excellence, or power.
second (n.)
One who follows or attends another for his support and aid; a backer; an assistant; specifically, one who acts as another's aid in a duel.
second (n.)
Aid; assistance; help.
second (n.)
An article of merchandise of a grade inferior to the best; esp., a coarse or inferior kind of flour.
second (a.)
The sixtieth part of a minute of time or of a minute of space, that is, the second regular subdivision of the degree; as, sound moves about 1,140 English feet in a second; five minutes and ten seconds north of this place.
second (a.)
In the duodecimal system of mensuration, the twelfth part of an inch or prime; a line. See Inch, and Prime, n., 8.
second (n.)
The interval between any tone and the tone which is represented on the degree of the staff next above it.
second (n.)
The second part in a concerted piece; -- often popularly applied to the alto.
second (a.)
To follow in the next place; to succeed; to alternate.
second (a.)
To follow or attend for the purpose of assisting; to support; to back; to act as the second of; to assist; to forward; to encourage.
second (a.)
Specifically, to support, as a motion or proposal, by adding one's voice to that of the mover or proposer.

OmegaWiki DictionaryOmegaWiki Dictionary Ω

second
One-sixtieth of a minute (as it is the second division of the hour, the minute being the first).
second
A short, indeterminate amount of time.
second
That which comes after the first.
second
The attendant of a contestant in a duel or boxing match, who must be ready to take over if the contestant drops out.
second
To give support or one's approval to; to be behind; to approve of.

Chambers DictionaryChamber's 20th Century Dictionary 📕

second
sek′und, adj. immediately following the first: the ordinal of two: next in position: inferior: other: another: favourable.—n. one who, or that which, follows or is second: one who attends another in a duel or a prize-fight: a supporter: the 60th part of a minute of time, or of a degree.—v.t. to follow: to act as second: to assist: to encourage: to support the mover of a question or resolution: (mus.) to sing second to: to put into temporary retirement in the army, as an officer when holding civil office (usually sēcond′).—n. Sec′ond-ad′ventist, one who lives in expectation of a second coming of Christ to establish a personal kingdom on earth, a premillenarian.—adv. Sec′ondarily, in a secondary manner or degree: (B.) secondly.—n. Sec′ondariness.—adj. Sec′ondary, following or coming after the first: second in position: inferior: subordinate: deputed.—n. a subordinate: a delegate or deputy.—adjs. Sec′ond-best, next to the best: best except one—(Come off second-best, to get the worst of a contest); Sec′ond-class, inferior to the first, as a second-class carriage.—ns. Sec′onder, one who seconds or supports; Sec′ond-flour, flour of a coarser quality, seconds.—adj. Sec′ond-hand, received as it were from the hand of a second person: not new: that has been used by another.—n. a hand for marking seconds on a clock or watch.—adv. Sec′ondly, in the second place.—ns. Sec′ond-mark, the character ″ as the mark in mathematics for a second of arc, in architecture for inches, and as a sign for a second of time; Secon′do, the lower part in a duet.—adj. Sec′ond-rate, being second in power, size, rank, quality, or value.—ns. Sec′ond-sight (see Sight); Sec′onds-pen′dulum, a pendulum which makes one oscillation per second of mean time.—Secondary education, that which is higher than primary or elementary; Secondary formation, rocks, strata, the Mesozoic strata; Secondary planet, a moon or satellite; Secondary school, a school for higher education; Second childhood, a condition of mental weakness often accompanying old age; Second coming, the second coming of Christ, or Second Advent; Second cousin, the child of a cousin; Second estate, the House of Lords; Second guard, an additional guard to a sword; Second story, in America, the second range of rooms from the first level, called in England the first floor; Second thoughts, reconsideration. [Fr.,—L. secundus—sequi, secutus, to follow.]

Sailor's Word-BookThe Sailor's Word-Book ⛵

second
The sixtieth part of a minute. A division of a degree of a circle. A term applied both to time and to space. Also, second in a duel; a very important part to play, since many a life may be saved without implicating honour.

Military DictionaryMilitary Dictionary and Gazetteer 💥

second
The next in order to the first; the next in place or station; as, a second lieutenant of the artillery service.

Wikipedia

The second (symbol: s) is a unit of time, and one of the seven SI base units. It is the time taken by 9,192,631,770 cycles of radiation that comes from electrons moving between two energy levels of the caesium-133 atom.

A second is also 1/60 of a minute, and 1/3600 of an hour.

The second (SI symbol: s), sometimes abbreviated sec., is the name of a unit of time, and is the International System of Units (SI) base unit of time.

SI prefixes are frequently combined with the word "second" to denote subdivisions of the second, "e.g.", the millisecond (one thousandth of a second) and nanosecond (one billionth of a second). Though SI prefixes may also be used to form multiples of the second (such as “kilosecond,” or one thousand seconds), such units are rarely used in practice. More commonly encountered, non-SI units of time such as the minute, hour, and day increase by multiples of 60 and 24 (rather than by powers of ten as in the SI system).

International second.

Under the International System of Units, the second is currently defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom. This definition refers to a caesium atom at rest at a temperature of 0 K (absolute zero). The ground state is defined at zero magnetic field. The second thus defined is equivalent to the ephemeris second.

The international standard symbol for a second is s (see ISO 31-1)

Historical origi