allo-

combining form

variants or before vowels all-

1

: other : different : atypical

allogamous

allotrope

2

: isomeric form or variety of (a specified chemical compound)

allopurinol

3

: being one of a group whose members together constitute a structural unit especially of a language

allophone

Word History

Etymology

borrowed from Greek, combining form from állos "other, another" — more at else entry 1