n.
In mediaeval demonology, the nocturnal assembly in which demons and sorcerers were thought to celebrate their orgies.
Next Wordn.
The hard calcareous deposit in the tissues of Anthozoa, constituting the stony corals. →
n. pl.
The order that includes rapacious birds. They have a hooked bill, and sharp, strongly curved talons. There are three families, represented by the vultures, the falcons or hawks, and the owls. →
n.
The motion of a point, line, or surface about a point or line as its center or axis, in such a manner that a moving point generates a curve, a moving line a surface (called a surface of revolution), and a moving surface a solid (called a solid of revolution); as, the revolution of a right-angled triangle about one of its sides generates a cone; the revolution of a semicircle about the diameter generates a sphere. →