papula
  丘疹,面泡,長瘡
  pap·u·la /ˈpæpjələ/ 名詞
  丘疹,鰓突,皮鰓(棘皮動物),丘疹的
  Pap·u·la n.; pl. Papulæ
  1. Med. A pimple; a small, usually conical, elevation of the cuticle, produced by congestion, accumulated secretion, or hypertrophy of tissue; a papule.
  2. Zool. One of the numerous small hollow processes of the integument between the plates of starfishes.
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