Biological; pertaining to biology or to a living organism.

A surname from German.

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

(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.