• (a.) Capable of expansion; that may be dilated; -- opposed to contractible; as, the lungs are dilatable by the force of air; air is dilatable by heat.
Di·lat'a·ble adjective [ Confer French dilatable .] Capable of expansion; that may be dilated; -- opposed to contractible ; as, the lungs are dilatable by the force of air; air is dilatable by heat.