PRECESSION n.
of the equinoxes (Astron.), the slow backward motion of the equinoctial points along the ecliptic, at the rate of 50.2" annually, caused by the action of the sun, moon, and planets, upon the protuberant matter about the earth's equator, in connection with its diurnal rotation; -- so called because either equinox, owing…
PRODIGY n.
dinary, or out of the usual course of nature, from which omens are drawn; a portent; as, eclipses and meteors were anciently deemed prodigies. So many terrors, voices, prodigies, May warn thee, as a sure foregoing sign. Milton.
RAG n.
A sail, or any piece of canvas. [Nautical Slang] Our ship was a clipper with every rag set. Lowell. Rag bolt, an iron pin with barbs on its shank to retain it in place. -- Rag carpet, a carpet of which the weft consists of narrow of cloth sewed together, end to end. -- Rag dust, fine particles of ground-up rags, used…
SOLSTICE n.
The point in the ecliptic at which the sun is farthest from the equator, north or south, namely, the first point of the sign Cancer and the first point of the sign Capricorn, the former being the summer solstice, latter the winter solstice, in northern latitudes; - - so called because the sun then apparently stands sti…
SPHERE n.
ch the various astronomical circles, as of right ascension and declination, the equator, ecliptic, etc., are conceived to be drawn; an ideal geometrical sphere, with the astronomical and geographical circles in their proper positions on it.