STOOP n.
rom seven to fourteen steps, with platform and parapets, leading to an entrance door some distance above the street; the French perron. Hence, any porch, platform, entrance stairway, or small veranda, at a house door. [U. S.]
SULPHUR n.
resembling sulphur in appearance, often carried from pine forests by the wind to a great distance. -- Sulphur trioxide (Chem.), a white crystalline solid, SO3, obtained by oxidation of sulphur dioxide. It dissolves in water with a hissing noise and the production of heat, forming sulphuric acid, and is employed as a…
SURFACE TENSION n.
s considered to equal the radius of the sphere of molecular action, that is, the greatest distance at which there is cohesion between two particles. Particles lying below this film, being equally acted on from all sides, are in equilibrium as to forces of cohesion, but those in the film are on the whole attracted inwar…
TAIL n.
a comet (Astron.), a luminous train extending from the nucleus or body, often to a great distance, and usually in a direction opposite to the sun. -- Tail of a gale (Naut.), the latter part of it, when the wind has greatly abated. Totten. -- Tail of a lock (on a canal), the lower end, or entrance into the lower pond…