1. A cylindrical lens. 2. A cylindrical or rodlike renal cast. 3. A cylindrical metal container for gases stored under high pressure. [G. kylindros, a roll]
- Bence Jones cylinders slightly irregular, relatively smooth, rod-shaped or cylindroid bodies of fairly tenacious, viscid proteinaceous material in the fluid of the seminal vesicles.
- crossed cylinders a lens used in refraction to determine the strength and axis of a cylindrical lens to correct astigmatism; a combination of concave and convex cylinders of like power whose axes are at right angles to each other.
- Külz c. SYN: coma cast.
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cyl·in·der (silґin-dər) [Gr. kylindros a roller] 1. a solid body shaped like a column. 2. cylindrical lens. cylindrical, cylindriform adjMedical dictionary. 2011.