Meaning

noun a measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substance; the fraction of incident radiant energy absorbed per unit mass or thi

originEtymology tree Proto-Indo-European *h₂ep Proto-Indo-European *-o Proto-Indo-European *h₂epó Proto-Italic *ap Latin abder. Latin ab- Proto-Indo-European *srebʰ- Proto-Indo-European *-yeti Proto-Indo-European *-éyeti Proto-Indo-European *srobʰéyeti Proto-Italic *sorβeō Latin sorbeō Latin absorbeō Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin…

Etymology from Wiktionary, CC BY-SA 3.0