Four-stroke engine — Four stroke cycle used in gasoline/petrol engines. The right blue side is the intake and the left yellow side is the exhaust. The cylinder wall is a thin sleeve surrounded by cooling liquid. A video montage of the Otto engines running at the… … Wikipedia
Year — A year (from Old English gēar) is the orbital period of the Earth moving around the Sun. For an observer on Earth, this corresponds to the period it takes the Sun to complete one course throughout the zodiac along the ecliptic. In astronomy, the… … Wikipedia
Year zero — There is no year zero in the widely used Gregorian calendar, nor in its predecessor, the Julian calendar. Under those systems, the year 1 BC is followed by AD 1. However, there is a year zero in astronomical year numbering (where it coincides… … Wikipedia
business cycle — a recurrent fluctuation in the total business activity of a country. [1920 25] * * * Periodic fluctuation in the rate of economic activity, as measured by levels of employment, prices, and production. Economists have long debated why periods of… … Universalium
Cycle of the Werewolf — First edition cover … Wikipedia
Cycle — Cy cle (s? k l), n. [F. ycle, LL. cyclus, fr. Gr. ky klos ring or circle, cycle; akin to Skr. cakra wheel, circle. See {Wheel}.] 1. An imaginary circle or orbit in the heavens; one of the celestial spheres. Milton. [1913 Webster] 2. An interval… … The Collaborative International Dictionary of English
Cycle of eclipses — Cycle Cy cle (s? k l), n. [F. ycle, LL. cyclus, fr. Gr. ky klos ring or circle, cycle; akin to Skr. cakra wheel, circle. See {Wheel}.] 1. An imaginary circle or orbit in the heavens; one of the celestial spheres. Milton. [1913 Webster] 2. An… … The Collaborative International Dictionary of English
Cycle of indiction — Cycle Cy cle (s? k l), n. [F. ycle, LL. cyclus, fr. Gr. ky klos ring or circle, cycle; akin to Skr. cakra wheel, circle. See {Wheel}.] 1. An imaginary circle or orbit in the heavens; one of the celestial spheres. Milton. [1913 Webster] 2. An… … The Collaborative International Dictionary of English
Cycle of the moon — Cycle Cy cle (s? k l), n. [F. ycle, LL. cyclus, fr. Gr. ky klos ring or circle, cycle; akin to Skr. cakra wheel, circle. See {Wheel}.] 1. An imaginary circle or orbit in the heavens; one of the celestial spheres. Milton. [1913 Webster] 2. An… … The Collaborative International Dictionary of English
Cycle of the sun — Cycle Cy cle (s? k l), n. [F. ycle, LL. cyclus, fr. Gr. ky klos ring or circle, cycle; akin to Skr. cakra wheel, circle. See {Wheel}.] 1. An imaginary circle or orbit in the heavens; one of the celestial spheres. Milton. [1913 Webster] 2. An… … The Collaborative International Dictionary of English
