Learn how to say Desmid correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word desmid:
a single-celled freshwater alga which appears to be composed of two rigid cells with a shared nucleus. The presence of desmids is usually an indicator of unpolluted water.
Family Desmidiaceae, division Chlorophyta (or phylum Gamophyta, kingdom Protista)
mid 19th century: from modern Latin Desmidium (genus name), from Greek desmos ‘band, chain’ (because the algae are often found united in chains or masses)