seventeen year locust

seventeen-year locust

[sev-uhn-teen-yeer]
noun
a cicada, Magicicada septendecim, of the eastern U.S., having nymphs that live in the soil, usually emerging in great numbers after 17 years in the North or 13 years in the South.
Also called periodical cicada.


Origin:
1810–20

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World English Dictionary
seventeen-year locust
 
n
Also called: periodical cicada an E North American cicada, Magicicada septendecim, appearing in great numbers at infrequent intervals because its nymphs take 13 or 17 years to mature

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