• Fissure Definition & Synonyms
- (v. t.) To cleave; to divide; to crack or fracture.
- (n.) A narrow opening, made by the parting of any substance; a cleft; as, the fissure of a rock.
• Fissurella Definition & Synonyms
- (n.) A genus of marine gastropod mollusks, having a conical or limpetlike shell, with an opening at the apex; -- called also keyhole limpet.