xylemn. 木質部木質部(植物纖維束的)學術名詞木質部:植物學、生命科學、地球科學、畜牧學、材料科學、食品科技木部:林學、植物學木材:林學導管部:植物學木[質]部:植物學木質:植物學英文釋義the woody part of plants: the supporting and water-conducting tissue, consisting primarily of tracheids and vessels