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"a biennial life cycle" "parsnips and carrots are biennial plants often grown as annuals"adjectivehaving a life cycle lasting two seasons
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"they met at biennial conventions"adjectiveoccurring every second year
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noun(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 seasontype of:
Definition that contains biennial
- beet biennial Eurasian plant usually having a swollen edible root; widely cultivated as a food crop
- mentzelia livicaulis biennial of southwestern United States having white stems and toothed leaves that is grown for its large pale yellow flowers that open in early morning
- onopordon acanthium biennial Eurasian white hairy thistle having pale purple flowers; naturalized in North America
- cynoglossum officinale biennial shrub of Europe and western Asia having coarse tongue-shaped leaves and dark reddish-purple flowers
- genus barbarea biennial or perennial herbs of north temperate regions: winter cress
- lychnis dioica biennial European catchfly having red or pink flowers; sometimes placed in genus Lychnis
- silene dioica biennial European catchfly having red or pink flowers; sometimes placed in genus Lychnis
- beta vulgaris biennial Eurasian plant usually having a swollen edible root; widely cultivated as a food crop
- yellow sweet clover biennial yellow-flowered Eurasian plant having aromatic leaves used as carminative or flavoring agent; widely cultivated especially as green manure or cover crop
- white melilot biennial plant; valuable honey plant