Bivoltine

Ka Class photograph from NZR (now defunct) publicity ...
Found on http://en.wikipedia.org/wiki/Bivoltine

bivoltine

bivoltine 1. Of certain silkworms: producing two broods per annum. 2. There are multivoltines. Some species produce one, two, three, four, six, or even eight broods per annum, and in the commercial world are distinguished as, univoltines, bivoltins, trivoltins, quadrivoltins, etc.
Found on http://www.wordinfo.info/words/index/info/view_unit/2728/3

Bivoltine

Having two broods.
Found on http://www.butterfly-guide.co.uk/help/gloss.htm

bivoltine

having two generations per year
Found on http://www.kerbtier.de/Pages/Glossar/enGlossar.html

Bivoltine

Having two generations per year.
Found on http://www.earthlife.net/insects/glossary.html

bivoltine

two generations per year.
Found on http://www.encyclo.co.uk/local/22036
No exact match found