অর্থ : Aerobic rod-shaped spore-producing bacterium. Often occurring in chainlike formations. Found primarily in soil.

অর্থ : Originally thought to be a single vitamin but now separated into several B vitamins.

অর্থ : A trivalent metalloid element. Occurs both in a hard black crystal and in the form of a yellow or brown powder.

অর্থ : A logarithmic unit of sound intensity equal to 10 decibels.

অর্থ : (physics) a unit of nuclear cross section. The effective circular area that one particle presents to another as a target for an encounter.

অর্থ : The 2nd letter of the Roman alphabet.

অর্থ : The blood group whose red cells carry the B antigen.