from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Not growing or living entirely on land; partly terrestrial: a semiterrestrial crustacean.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. partly terrestrial, living sometimes on land
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. chiefly but not exclusively terrestrial
Sorry, no etymologies found.
When both groups are discussed, we will refer to the first group as terrestrial and the last group as semiterrestrial.