You searched for: “centimeter”
centimeter, cm
A metric unit of length equal to one hundredth of a meter.
This entry is located in the following unit: Measurements and Mathematics Terms (page 4)
Word Entries containing the term: “centimeter”
cubic centimeter, cc
1. A metric unit of volume equal to one thousandth of a liter.
2. A unit of capacity, being that of a cube each side of which measures one centimeter; equal to one milliliter.
This entry is located in the following unit: Measurements and Mathematics Terms (page 5)
twenty-one centimeter radiation
The common name given to radio waves emitted at 1,420 megahertz as the result of the "flipping over" of the electron in a hydrogen atom in order to oppose the spin direction of the central proton.

The radiation is an example of line emission.

This entry is located in the following unit: Astronomy and related astronomical terms (page 27)