a second

An unknown unit of measurement.

"I need to move the car back a second."

"You need to adjust the width a second."

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Second

The second is 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 cesium-133 atom (at 0 Kelvin).

The second has an interesting definition!

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seconds

Filling your plate with food for the second time

He was still hungry, so he went back for seconds

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second

The duration of 9,192,631,770 periods of radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 132.91 atom.

I'll be two seconds...

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Secondively

In addition to a point made earlier.

"And secondively, I know you are the big marriage expert...Oh I'm sorry, I forgot...your wife is dead!" - Tobias Fünke

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seconded

when you agree to someones opinion.

Cherry coke is the best soda of all time!

- seconded

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second

A length of time that is very-under-exaggerated.

<Killer> Hey there.
<Spiller> Hi, I'll be back in a second.
<Killer> Okay.
*** 20 minutes later ***
<Killer> ...
<Spiller> I'm back.
<Killer> Where were you?
<Spiller> Hang on, back in a second.
*** Killer is offline ***

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