sb. and a. [ad. F. univoltin, -tain, f. uni- UNI- + It. volta turn, time.] a. sb. One of a breed of silkworms which produces a single brood in a year. b. adj. Having but one brood each year.
1874. J. Geoghegan, Parl. Rep. Silk in India, 118. That this insect [sc. a silkworm] has quite changed its period of existence…, and from a multivoltine become a uniovoltine [sic].
1883. G. Watt, Econ. Prod. India, III. 66. In Upper India and in Kashmir the univoltine worms are those usually reared.
1892. Chambers’s Encycl., IX. 453/1. The B[ombyz] mori is univoltine or annual.
