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Webster 1913 Edition
Katydid
Ka′ty-didˊ
,Noun.
(Zool.)
A large, green, arboreal, orthopterous insect (
Cyrtophyllus concavus
) of the family Locustidæ
, common in the United States. The males have stridulating organs at the bases of the front wings. During the summer and autumn, in the evening, the males make a peculiar, loud, shrill sound, resembling the combination Katy-did, whence the name.