from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The property of crystallizing in three distinct forms.
- n. The coexistence among individuals of the same species of three distinct forms, not generally connected by intermediate gradations.
from the GNU version of the Collaborative International Dictionary of English
- n. The property of crystallizing in three forms fundamentally distinct, as is the case with titanium dioxide, which crystallizes in the forms of rutile, octahedrite, and brookite. See pleomorphism.
- n. The coëxistence among individuals of the same species of three distinct forms, not connected, as a rule, by intermediate gradations; the condition among individuals of the same species of having three different shapes or proportions of corresponding parts; -- contrasted with
polymorphism, and dimorphism.
from The Century Dictionary and Cyclopedia
- n. In crystallography, the property of crystallizing in three fundamentally different forms.
- n. In biology, existence under three distinct forms. It is not rare among insects.
- n. In botany, the occurrence of three distinct forms of flowers or other parts upon the same plant, or upon plants of the same species.
See trimorphic. (Wiktionary)