Definify.com
Webster 1913 Edition
Allomorph
Al′lo-morph
,Noun.
[Gr. [GREEK] other +
μορφή
form.] (Min.)
(a)
Any one of two or more distinct crystalline forms of the same substance; or the substance having such forms; –
as, carbonate of lime occurs in the
. allomorphs
calcite and aragonite(b)
A variety of pseudomorph which has undergone partial or complete change or substitution of material; – thus limonite is frequently an allomorph after pyrite.
G. H. Williams.