Sentence Examples


  • Op., Operculum, or ventral lip. ov., Ovary.
  • Above the mouth is the lid (operculum), which varies in size from a small narrow process to a large heartshaped expansion.
  • Shell spirally coiled; a single ctenidium; eyes perforated; a horny operculum; lobes between the tentacles.
  • Shell spirally coiled; operculum horny; intertentacular lobes absent.
  • Shell spirally coiled; epipodial tentacles present; operculum thick and calcareous.