Dictionary
ab•sorp•ti•om•e•ter
Pronunciation: (ab-sôrp"shē-om'i-tur, -zôrp"-), [key]—
n.
a photoelectric instrument for measuring the concentration of a substance, as a transparent solution, by its absorption of monochromatic light.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.