Late 19th century; earliest use found in Geological Magazine. From ancient Greek ἀλλότριος belonging to another + -morphic, after German allotriomorph.
Definition of allotriomorphic in US English:
allotriomorphic
adjective
Mineralogy
Xenomorphic. Contrasted with idiomorphic.
Origin
Late 19th century; earliest use found in Geological Magazine. From ancient Greek ἀλλότριος belonging to another + -morphic, after German allotriomorph.