Any of various orthopteran insects of the family Tettigoniidae, having long antennae and usually a green body, the male of which produces a shrill sound by rubbing together specialized organs on the forewings.
Any of several large, green orthopteran insects (esp. family Tettigoniidae) having long, slender antennae and long hind legs: the male has highly developed stridulating organs on the forewings, that produce a shrill sound.
Origin of katydid
- Imitative of its sound
From American Heritage Dictionary of the English Language, 5th Edition