(n) thickening of the skin (usually unilateral on an extremity) caused by congenital enlargement of lymph vessel and lymph vessel obstruction, Syn.pachyderma
The Collaborative International Dictionary of English (GCIDE) v.0.53
n. [ Cf. F. pachyderme. ] (Zool.) Any of various nonruminant hoofed mammals having very thick skin, including the elephant, rhinoceros, and hippopotamus, one of the Pachydermata. [ WordNet 1.5 + 1913 Webster ]
n. (Med.) An abnormal thickening of the skin (usually unilateral on an extremity) caused by congenital enlargement of lymph vessel and lymph vessel obstruction. Syn. -- pachydermatosis, pachydermia, nevoid elephantiasis. [ WordNet 1.5 ]
‖n. pl. [ NL., fr. Gr. pachy`dermos thick-skinned; pachy`s thick + de`rma skin. ] (Zool.) A group of hoofed mammals distinguished for the thickness of their skins, including the elephant, hippopotamus, rhinoceros, tapir, horse, and hog; the pachyderms. It is now considered an artificial group. [ 1913 Webster ]
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