cylindroid
English edit
Etymology edit
Noun edit
cylindroid (plural cylindroids)
- (geometry) A cylinder with elliptical cross-section.
- 1830, Sir David Brewster, The Edinburgh Encyclopaedia, page 523:
- The intrados of a simple vault is generally formed of the portion of the surface of a cylinder, cylindroid, or sphere, never greater than that of half the solid; and the springing lines of the coussinet, which terminate the walls from which the vault rises, are generally straight lines, parallel to the axis of the cylinder or cylindroid.
- (geometry) A certain three-dimensional surface described by a moving straight line, used to illustrate the motions of a rigid body and the forces that act upon it.
- (medicine) A ribbon-like mucous cast frequently found in the urine in cases of mild irritation of the kidney.
References edit
- “cylindroid”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.