noun Physics, Optics.
a method for increasing the number of atoms or molecules occupying higher energy levels by irradiating them with light of the proper frequencies to raise them to those levels.
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What does “clement” mean?
Origin of optical pumping
First recorded in 1950–55
Words nearby optical pumping
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020