SINCE 1828
bivoltine
adjective
bi·vol·tine
| \ bīˈvōlˌtēn\
variants:
or less commonly bivoltin \ -ᵊn \
Definition of bivoltine
1
: producing two broods in a season
—used especially of silkworms
2
of insects
: having two generations a year, a summer generation without diapause and a winter generation with diapause
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Merriam-Webster unabridged
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