The second is the base unit of time in the International System of Units

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  1. One that is number two in a series
  2. One that is next in rank, quality, precedence, position, status, or authority.
  3. The place that is next below first in a race or contest.
  4. A manufactured item that, though still usable, fails to meet quality control standards.
    They were discounted because they contained blemishes, nicks or were otherwise factory seconds.
  5. An additional helping of food.
    That was good barbecue. I hope I can get seconds.
  6. Another chance to achieve what should have been done the first time, usually indicating success this time around. (See second-guess.)
  7. 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).
  8. The second gear of an engine.
  9. Second base.

Noun (etymology 2)

  1. 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.
  2. A unit of angle equal to one-sixtieth of a minute of arc or one part in 3600 of a degree.
  3. A short, indeterminate amount of time.
    I'll be there in a second.

Noun (etymology 3)

  1. One who supports another in a contest or combat, such as a dueller's assistant.
  2. One who agrees in addition, or such a motion, as required in certain meetings to pass judgement etc.
    If we want the motion to pass, we will need a second.
  3. Aid; assistance; help.


  1. To transfer temporarily to alternative employment.
  2. To assist or support; to back.
  3. To agree as a second person to (a proposal), usually to reach a necessary quorum of two.
    I second the motion.
  4. To follow in the next place; to succeed.


  1. The ordinal number corresponding to the cardinal number two.
  2. Number-two; following after the first one with nothing between them.
  3. Next to the first in value, power, excellence, dignity, or rank; secondary; subordinate; inferior.
  4. Being of the same kind as one that has preceded; another.


  1. At the second rank.
    Saturn is the second largest planet.
  2. After the first occurrence but before the third occurrence.
    He is batting second today.

The above text is a snippet from Wiktionary: second
and as such is available under the Creative Commons Attribution/Share-Alike License.

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