| pearlstone | <chemical> A glassy volcanic rock of a grayish colour and pearly luster, often having a spherulitic concretionary structure due to the curved cracks produced by contraction in cooling. Source: Websters Dictionary (01 Mar 1998) |
|---|
| Elschnig pearls | The proliferated anterior capsule of the lens of the eye after surgical capsulotomy or injury. (05 Mar 2000) |
|---|---|
| Epstein's pearls | Multiple small white epithelial inclusion cysts found in the midline of the palate in newborn infants. (05 Mar 2000) |
| Laennec's pearls | An obsolete term for small, round, translucent, tenacious bodies in the sputum of some persons with asthma; when floated in water, they become unfurled and are then recognizable as Curschmann's spirals. (05 Mar 2000) |