bismuthic
- a containing bismuth (especially in the pentavalent state)
bipolar
- a of or relating to manic depressive illness
- a of, pertaining to, or occurring in both polar regions
the bipolar distribution of certain species - a having two poles
biquadratic
- n an algebraic equation of the fourth degree
- n an equation of the fourth degree
- n a polynomial of the fourth degree
- a of or relating to the fourth power
biracial
- s consisting of or combining two races
a biracial committee
biradial
- s showing both bilateral and radial symmetry
some sea anemones are biradial
biramous
- s resembling a fork; divided or separated into two branches
the biramous appendages of an arthropod
birch
- n hard close-grained wood of any of various birch trees; used especially in furniture and interior finishes and plywood
- n any betulaceous tree or shrub of the genus Betula having a thin peeling bark
- n a switch consisting of a twig or a bundle of twigs from a birch tree; used to hit people as punishment
my father never spared the birch - v whip with a birch twig
- s consisting of or made of wood of the birch tree