【医】 trophoblastic operculum
【医】 chorionic ectoderm; plasmodiblast; trophic layer; trophoblast
trophoderm; vegetative layer
about; annex; canopy; casing; cover; lid; shell; top; build
【化】 cap; cover; lid
【医】 cap; coping; operculum; roof; tegmen; tegmentum; veil