It is pyriform with rather long teeth.

The long-ovate aperture is somewhat pyriform and forms usually less than half the total length of shell.

The aperture is ovately pyriform, slightly expanded in front.

The aperture is irregularly pyriform.

The internal region of the flavedo is rich in multicellular bodies with spherical or pyriform shapes, which are full of essential oils.

These are sympodial epiphytic plants with wide, characteristic conical or pyriform pseudobulbs, carrying two to three broad, acute, lanceolate leaves.

These are minute rounded or pyriform parasites found within erythrocytes, or other circulating or endothelial cells of vertebrates.

Pyriform sinus, extending from the pharyngoepiglottic fold to the upper end of the esophagus, bounded laterally by the thyroid cartilage and medially by the surface of the aryepiglottic fold and the arytenoid and cricoid cartilages.