(n): a large group of bacteria having rigid cell walls; motile types have flagella
(n): originally thought to be a single vitamin but now separated into several B vitamins
(n): any vitamin that is soluble in water
(n): a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
(n): any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
(n): a logarithmic unit of sound intensity equal to 10 decibels
(n): any acoustic unit of measurement
(n): (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter
(n): a system of units used to measure areas
(n): the 2nd letter of the Roman alphabet
(n): the conventional characters of the alphabet used to represent speech
(n): the blood group whose red cells carry the B antigen
(n): human blood cells (usually just the red blood cells) that have the same antigens
B. Chemical element symbol for Boron.