Spirogyra（n.） 英 [,spaɪrə(ʊ)'dʒaɪrə] 美 [ ,spaɪrə'dʒaɪrə] genus of common freshwater algae, 1875, from Modern Latin (1833), from Latinized form of Greek speira "a winding, a coil" (see spiral (adj.)) + gyros "a circle, ring" (see gyre (n.)).该词起源时间：1875年
