desmid(redirected from desmidian)
Also found in: Dictionary, Thesaurus.
desmid,a protist of the class Charophyceae (see ChlorophytaChlorophyta
, phylum (division) of the kingdom Protista consisting of the photosynthetic organisms commonly known as green algae. The organisms are largely aquatic or marine.
..... Click the link for more information. ).
Any member of a group of microscopic, unicellular green algae of the family Desmidiaceae, having cells of varying shapes but always composed of mirror-image semicells, often demarcated by a median constriction or incision, and a cell wall that has pores, which are frequently ornamented.