| BISCUITIER | • BISCUITY adj. like a biscuit in texture. |
| BISECTIONS | • bisections n. Plural of bisection. • BISECTION n. the act of bisecting. |
| BISEXUALLY | • bisexually adv. In a bisexual manner. • BISEXUAL adv. hermaphrodite. |
| BISHOPBIRD | • BISHOPBIRD n. a genus of African weaverbird, the males of which have black plumage marked with red or yellow. |
| BISHOPDOMS | • bishopdoms n. Plural of bishopdom. • BISHOPDOM n. the jurisdiction of a bishop. |
| BISHOPRICS | • bishoprics n. Plural of bishopric. • BISHOPRIC n. the diocese or jurisdiction of a bishop; the rank or office of a bishop. |
| BISHOPWEED | • bishopweed n. Alternative form of bishopsweed. • BISHOPWEED n. goutweed. |
| BISMUTHOUS | • bismuthous adj. (Chemistry) Of, or containing bismuth in its lower valence. • BISMUTHOUS adj. containing bismuth. |
| BISPHENOLS | • bisphenols n. Plural of bisphenol. • BISPHENOL n. a hydrocarbon used in the manufacture of plastics and resins. |
| BISSEXTILE | • bissextile adj. Having an intercalary day, particularly the quadrennial leap day of the Julian and Gregorian calendars… • bissextile n. Synonym of leap year: a year with an intercalary day. • BISSEXTILE n. the extra day in the leap year. |
| BISTOURIES | • bistouries n. Plural of bistoury. • BISTOURY n. a narrow surgical knife. |
| BISULFATES | • bisulfates n. Plural of bisulfate. • BISULFATE n. an acid sulphate, also BISULPHATE. |
| BISULFIDES | • bisulfides n. Plural of bisulfide. • BISULFIDE n. a sulphide having two atoms of sulphur in the molecule, also BISULPHIDE. |
| BISULFITES | • bisulfites n. Plural of bisulfite. • BISULFITE n. an acid sulfite, also BISULPHITE. |
| BISULPHATE | • bisulphate n. (Inorganic chemistry) Alternative spelling of bisulfate. • BISULPHATE n. a salt containing double the proportion of the acid radical present in a sulphate, also BISULFATE. |
| BISULPHIDE | • bisulphide n. Alternative spelling of bisulfide. • BISULPHIDE n. a sulphide having two atoms of sulphur in the molecule, also BISULFIDE. |
| BISULPHITE | • bisulphite n. (Inorganic chemistry, Britain) Alternative spelling of bisulfite. • BISULPHITE n. a salt or ester of sulphurous acid containing the monovalent group, also BISULFITE. |
| BISYMMETRY | • bisymmetry n. (Mathematics) The property of being bisymmetric. • BISYMMETRY n. symmetry in two planes at right angles to each other. |