Ple`o*mor"phism (?), n. [Gr. more + form.]
The property of crystallizing under two or more distinct fundamental forms, including dimorphism and trimorphism.
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.
<-- thoroughly discredited, except for a few apparent examples of such a phenomenon. -->
© Webster 1913.