From The Collaborative International Dictionary of English v.0.48 :
Gravid \Grav"id\, a. [L. gravidus, fr. gravis heavy, loaded. See
Grave, a.]
Being with child; heavy with young; pregnant; fruitful; as, a
gravid uterus; gravid piety; -- of animals as well as people.
" His gravid associate." --Sir T. Herbert.
[1913 Webster]
From WordNet (r) 3.0 (2006) :
gravid
adj 1: in an advanced stage of pregnancy; "was big with child";
"was great with child" [syn: big(p), enceinte,
expectant, gravid, great(p), large(p),
heavy(p), with child(p)]
From Moby Thesaurus II by Grady Ward, 1.0 :
22 Moby Thesaurus words for "gravid":
anticipating, big, big with child, big-laden, breeding, carrying,
carrying a fetus, expectant, expecting, gestating, gone, great,
heavy, heavy with child, knocked up, parturient, preggers,
pregnant, superfetate, superimpregnated, teeming, with child