(inorganic chemistry) NH₄HCO₃; a white powder with properties similar to those of ammonium carbonate.

plural of bicycle kick

(mathematics) Of or pertaining to a bicategory

(mathematics) A particular construct in category theory

(bodybuilding) A standard pose in which both sets of biceps are flexed and the chest is thrust forward.

(bodybuilding) A standard pose in which both sets of biceps and the abdominals are flexed, while one is facing the judges.

(bodybuilding) A standard pose in which both sets of biceps and back muscles are flexed, with one's back turned toward the judges.

(bodybuilding) A standard pose in which both sets of biceps and back muscles are flexed, with one's back turned toward the judges.

(anatomy) The flexor of the knee, a two-headed muscle in the back of the upper leg.

(biology) Dividing into two points at the end.