Some unions meet annually, some biennially, some triennially, and a few determine by referendum when the convention is to meet.
Legislature and State officers elected quadrennially; members Congress, biennially.
Time of meeting of the legislature, fourth Monday in November, biennially.
This can be done annually or biennially according to whether the plants are growing strongly or not.
The congress was to meet annually in time of common war, and biennially in times of peace.
It should have a dressing of manure annually, or at least biennially, to keep it in good health and colour.
Both were biennially elected, and the compensation of each was fixed at 5% on the amount of the state tax assessed and collected.
The Senate shall be composed of fifty Senators, biennially chosen by ballot.
In some states the legislatures meet annually; in others, biennially.
This body meets in August, biennially, to revise the jury list.
"lasting for two years" (1620s); "occurring every two years" (1750), from Latin biennium "two-year period," from bi- (see bi-) + annus "year" (see annual). The vowel change is "due to the Latin phonetic law according to which the unaccented and closed radical syllable of the second element of compounds, original -ă- becomes -ĕ-" [Klein]. The noun meaning "a biennial plant" is attested by 1770.
Adjective Completing a life cycle normally in two growing seasons.
Noun A biennial plant. In the first year, biennials normally produce a short stem, a rosette of leaves, and a fleshy root that acts as food supply. In the second season, biennials blossom, produce seed, use up their food supply, and die. Carrots, parsnips, and sugar beets are examples of biennials. Compare annual, perennial.