| 释义 |
plac·o·derm
I. \ˈplakəˌdərm\ adjective
Etymology: plac- + Greek derma skin — more at derm-
1. also plac·o·der·ma·tous \| ̷ ̷ ̷ ̷|dərməd.əs\ : having a cell wall of two or rarely more pieces and vertical pores in the wall — used of desmids of the family Desmidiaceae; distinguished from saccoderm
2. or plac·o·der·mal \| ̷ ̷ ̷ ̷|dərməl\ [New Latin Placodermi] : of or relating to the Placodermi
II. noun
(-s)
Etymology: New Latin Placodermi
: a fish or fossil of the class Placodermi |