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pleomorphism
CIDE DICTIONARY
pleomorphism, n. [Gr. more + morfh` form.].
- The property of crystallizing under two or more distinct fundamental forms, including dimorphism and trimorphism. [1913 Webster]
- The theory that the various genera of bacteria are phases or variations of growth of a number of Protean species, each of which may exhibit, according to undetermined conditions, all or some of the forms characteristic of the different genera and species. [1913 Webster]
OXFORD DICTIONARY
pleomorphism, n. Biol., Chem., & Mineral. the occurrence of more than one distinct form.
Derivative
pleomorphic adj.
Etymology
Gk pleion more + morphe form
For further exploring for "pleomorphism" in Webster Dictionary Online