(mineralogy) A basic fluoride mineral similar to pyrochlore but containing barium.

The acceleration of a body, relative to the freefall acceleration due to any local gravitational field, expressed in multiples of g0 (the mean acceleration due to gravity at the Earth's surface).

(obsolete) Happening randomly.

(organic chemistry) Any of a group of hydroxyanthracene glycosides, found in cascara, that act as laxatives