phenenyl
/ˈfiːnɪnʌɪl/ /ˈfɛnɪnʌɪl/ /ˈfiːnɪn(ɪ)l/Chemistry
noun
A trivalent radical, —C6H3, derived from benzene by the loss of three hydrogen atoms (specifically in meta positions). Usually attributive.
Origin
Early 20th century; earliest use found in The New English Dictionary. Apparently from pheno- + -ene + -yl.