n. an order of primitive tropical gymnosperms abundant in the Mesozoic, now reduced to a few scattered tropical forms. Syn. -- order Cycadales. [ WordNet 1.5 ]
n.; pl. E. Cicadas L. Cicadæ [ L. ] (Zool.) Any species of the genus Cicada or of the family Cicadidae. They are large hemipterous insects, with nearly transparent wings. The male makes a shrill sound by peculiar organs in the under side of the abdomen, consisting of a pair of stretched membranes, acted upon by powerful muscles. A noted American species (Cicada septendecim) is called the seventeen year locust. Another common species is the dogday cicada. Syn. -- cicala. [ 1913 Webster ]
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