pachyderma

1. Pachyderma ( sin.) from 32 western Arctic Ocean surface sediment samples collected by the First and Second Chinese Arctic Expedition were analyzed for stable oxygen and carbon isotopes.
   本文对中国首次及第二次北极科学考察在北冰洋西部所采集的32个表层沉积物中N.pachyderma（sin.）

noun

1. thickening of the skin (usually unilateral on an extremity) caused by congenital enlargement of lymph vessel and lymph vessel obstruction

   Synonym:    nevoid elephantiasis