(chemistry) Any metal at the lower end of the electrochemical series that oxidizes readily. / (metallurgy) The metal to be welded (rather than that used to weld). / A common or inexpensive metal.

plural of Lewis base

plural of base metal

(idiomatic, business) The number of units of a system or product that are currently in use.

The fans of a thing or person taken as a group.

A parachute jump from a fixed point rather than from an aircraft; typically from a tall building, high bridge or rock formation.

(intransitive) To make such a jump.

(chemistry) Any compound, of general formula Xⁿ⁺, which can be transformed into a conjugate acid HX⁽ⁿ⁺¹⁾⁺ by the gain of a proton.

(baseball) A base without a runner on it.

(baseball) The base after second base in a counter-clockwise path around a baseball infield. / (blackjack) The betting spot located immediately to the right of the dealer, which is last to act.