from The American Heritage® Dictionary of the English Language, 4th Edition
- adv. In the direction of the back; dorsally.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. Toward the dorsal side.
from the GNU version of the Collaborative International Dictionary of English
- adv. Toward the dorsum or back; on the dorsal side; dorsally.
from The Century Dictionary and Cyclopedia
- In anatomy, toward the dorsum or back; backward, with reference to the animal itself, without regard to its posture: as, the spinal cord lies dorsad of the bodies of the vertebræ; the aorta arches dorsad as well as sinistrad: opposed to ventrad, and in Vertebrata equivalent to neurad.
Latin dorsum back + ad to. (Wiktionary)