DICT.TW Dictionary Taiwan

 Dor·sal a.
 1. Anat. Pertaining to, or situated near, the back, or dorsum, of an animal or of one of its parts; notal; tergal; neural; as, the dorsal fin of a fish; the dorsal artery of the tongue; -- opposed to ventral.
 2. Bot. (a) Pertaining to the surface naturally inferior, as of a leaf. (b) Pertaining to the surface naturally superior, as of a creeping hepatic moss.
 Dorsal vessel Zool., a central pulsating blood vessel along the back of insects, acting as a heart.