all-

1. variant of allo- before a vowel: allonym.

1. a combining form meaning “other,” used in the formation of compound words (allotrope) and in chemistry to denote the more stable of two geometric isomers.

combining form

1. a variant of allo-

combining form

1. indicating difference, variation, or oppositionallopathy; allomorph; allophone; allonym

word-forming element meaning “other,” from Greek allo-, comb. form of allos “other, different” (see alias (adv.)).

pref.

1. Variant ofallo-

pref.

1. Other; different:allotransplantation.
2. Isomeric:allomorphism.