硅藻门 guīzǎomén Bacillariophyta Origin Definitions Defs Strokes Stroke Words Sentences Sents 硅藻 guīzǎo diatom A type of single-celled algae found in freshwater, seawater, and moist soil that serves as food for fish and invertebrates.门 門 mén phylum phylum or division in biological taxonomy