chloro-¹

variant of chlor-^1. before a consonant:

chlorophyll.

chloro-²

variant of chlor-^2. before a consonant:

chloroform.

British Dictionary definitions for chloro-

chloro-

combining form

indicating the colour green: chlorophyll

chlorine: chloroform

Word Origin and History for chloro-

before vowels chlor-, word-forming element used in chemistry, usually indicating the presence of chlorine in a compound, but sometimes "green," from Latinized comb. form of Greek khloros (see Chloe); also cf. chlorine.

chloro- in Medicine

chloro- or chlor-
pref.

Green: chlorosis.
Chlorine: chloroform.