bismuthic
- a containing bismuth (especially in the pentavalent state)
biennial
- n (botany) a plant having a life cycle that normally takes two seasons from germination to death to complete; flowering biennials usually bloom and fruit in the second season
- a having a life cycle lasting two seasons
a biennial life cycle
parsnips and carrots are biennial plants often grown as annuals - s occurring every second year
they met at biennial conventions
bifilar
- a having or using two filaments
a bifilar suspension of a waving part of an instrument