Biological; pertaining to biology or to a living organism.

(chiefly phonetics) Occurring over or changing with space; geographic. / (chiefly phonetics) Of, pertaining to or concerned with changes that occur over space.

A surname from German.

(botany) Of or relating to plants of the family Rutaceae, of which the rue is the type, and which includes also the orange, lemon, dittany, and buchu.