of, like or pertaining or pertaining to oranges or orange trees
• (a.) Pertaining to, or resembling, the Aurantiaceae, an order of plants (formerly considered natural), of which the orange is the type.
Au·ran`ti·a'ceous adjective Pertaining to, or resembling, the Aurantiaceæ , an order of plants (formerly considered natural), of which the orange is the type.