Meaning of allomorphism in English:

allomorphism

Pronunciation /ˌaləˈmɔːfɪz(ə)m/

noun

Mineralogy Chemistry
  • Change of crystal form without change in chemical composition; the existence or occurrence of allomorphs.

Origin

Mid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. From allo- + -morphism.