dor ‧ sal /ˈdɔːs ə l $ ˈdɔːr-/ BrE AmE adjective [only before noun]
[ Date: 1400-1500 ; Language: Late Latin ; Origin: dorsalis , from Latin dorsum 'back' ]
on or relating to the back of an animal or fish:
a shark’s dorsal fin
dor ‧ sal /ˈdɔːs ə l $ ˈdɔːr-/ BrE AmE adjective [only before noun]
[ Date: 1400-1500 ; Language: Late Latin ; Origin: dorsalis , from Latin dorsum 'back' ]
on or relating to the back of an animal or fish:
a shark’s dorsal fin
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012