A second is directly part of other units, such as frequency measured in hertz (inverse seconds or s −1), speed in meters per second, and acceleration in meters per second squared.

Dec 6, 2016 · The meaning of SECOND is next to the first in place or time. How to use second in a sentence.

SECOND definition: 1. immediately after the first and before any others: 2. the position in which a person finishes a…. Learn more.

1. In the second order, place, or rank: finished second. 2. But for one other; save one: the second highest peak.

A second is a unit of time, and one of the sixty parts that a minute is divided into.

He got out with seconds to spare. see also split second Wait a second—this email's been sent to me by mistake. This will only take a second. I hesitated for a second before speaking. For a …

second, fundamental unit of time, now defined in terms of the radiation frequency at which atoms of the element cesium change from one state to another.

In science, a second is the time it takes for a caesium atom to vibrate 9,192,631,770 (around 9 billion) times. Scientists measure the second this way because the length of a day changes all …

You're second on the list. This is my second piece of chocolate cake. She didn't win but she did come second (= was the one after the winner) in one race.

SECOND meaning: 1 : occupying the number two position in a series; 2 : next to the first in importance or rank