desmid(redirected from desmidian)
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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.
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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.