Infinity

Part of speech: noun (n.)

1. Unlimited extent of time, space, or quantity; eternity; boundlessness; immensity. Sir T. More. There can not be more infinities than one; for one of them would limit the other. Sir W. Raleigh.

2. Unlimited capacity, energy, excellence, or knowledge; as, the infinity of God and his perfections. Hooker.

3. Endless or indefinite number; great multitude; as an infinity of beauties. Broome.

4. A quantity greater than any assignable quantity of the same kind.

5. That part of a line, or of a plane, or of space, which is infinitely distant. In modern geometry, parallel lines or planes are sometimes treated as lines or planes meeting at infinity. Circle at infinity, an imaginary circle at infinity, through which, in geometry of three dimensions, every sphere is imagined to pass. -- Circular points at infinity. See under Circular.