Discover the meaning of the term Ustuwana (أسطوانة) in Islamic vocabulary.
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Updated on 11 April 2026 at 1:05 AM
📖 2 min readA shape enclosed by two parallel circles at its ends, its two bases, joined by a curved surface onto which every line parallel to any line projected on its surface between its bases falls.
Know the body of the three extensions, length, width, depth: if one surface encloses it such that lines from any point within the body to that surface are equal, that body is a sphere, that point its center, that surface its perimeter, the lines its radii, and the outward to the perimeter in the two directions its diameter. If that is what the sphere turns upon, it is called axis; its ends the sphere’s poles and the motion’s poles; the sphere’s median, of circles imagined on its surface, great if passing its center, else small. The point on the sphere’s surface whose outgoing lines to the segment-base’s perimeter are equal is its pole. If six equal squares enclose the body, it is a cube. If encloses…
Lexically: the pole in mosque or house or like; the jurists’ use leaves it not. As a term: a shape enclosed by two parallel circles at its ends, its two bases, joined by a curved surface. See: at-Tawqif, and al-Mousou’a al-Fiqhiyya.
A body starting from a circle and ending in a circle equal to it, enclosed by a cylindrical surface. And Allah knows best.
A shape enclosed by two parallel circles at its ends, its two bases, joined by a curved surface.