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A turn revolution; rotation; compass. According to the common vicissitude and wheel of things, the proud and the insolent, after long trampling upon others, come at length to be trampled upon themselves. South. [He] throws his steep flight in many an aëry wheel. Milton. A wheel within a wheel, or Wheels within wheels,…

A friend and supporter of the American Revolution; -- opposed to Tory, and Royalist.

The time of the apparent revolution of the sun trough the ecliptic; the period occupied by the earth in making its revolution around the sun, called the astronomical year; also, a period more or less nearly agreeing with this, adopted by various nations as a measure of time, and called the civil year; as, the common lu…

Accomplished in a year; as, the yearly circuit, or revolution, of the earth. Shak.

he surface of a sphere included between two parallel planes; the portion of a surface of revolution included between two planes perpendicular to the axis. Davies & Peck (Math. Dict.)

a transitory stage through which rapidly multiplying bacteria pass in the course of their evolution. Also used adjectively.

part of biology which relates to the animal kingdom, including the structure, embryology, evolution, classification, habits, and distribution of all animals, both living and extinct.