n. pl. per·i·the·ci·a (-shē-ə, -sē-ə) A small flask-shaped fruiting body in certain ascomycetous fungi that contains the ascospores. [New Latin : PERI- + Greek thēkion, diminutive of thēkē, case; see dhē- in the Appendix of Indo-European roots.] per′i·theci·al (-shē-əl, -sē-əl) adj. |
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