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