ˈidēəˌblast noun
Etymology: International Scientific Vocabulary idio- + -blast; originally formed in German
1.
a. : an isolated plant cell (as a sclereid) that differs markedly in form, contents, or wall structure from neighboring cells
b. : a hypothetical structural unit of a living cell — compare biophore
2. : a crystal in a metamorphic rock that is bounded by its own faces, looks like a phenocryst, but is of later growth
• id·io·blas·tic |idēə|blastik adjective