Entry: apochromatic (adj.)
In context: See previous.
Definition: Epithet of an improved form of achromatic lens invented by Abbe. Also as n., an apochromatic lens; in Photogr. further shortened to ˈapochroˌmat n. So apoˈchromatism n. apochromatic condition or quality.
Other: Pretty obvious, right?
SNOOT score: 1
Source: Oxford English Dictionary