Index of English words, starting with "sp"

(1) - Spherometer (n.) An instrument for measuring the curvature of spherical surface, as of lenses for telescope, etc.

(1) - Spherule (n.) A little sphere or spherical body; as, quicksilver, when poured upon a plane, divides itself into a great number of minute spherules.

(1) - Spherulite (n.) A minute spherical crystalline body having a radiated structure, observed in some vitreous volcanic rocks, as obsidian and pearlstone.