Cycle

Cycle, cycles, or cyclic may refer to:

Anthropology and social sciences

 * Cyclic history, a theory of history
 * Cyclical theory, a theory of American political history associated with Arthur Schlesinger, Sr.
 * Social cycle, various cycles in social sciences
 * Business cycle, the downward and upward movement of gross domestic product (GDP) around its ostensible, long-term growth trend

Films

 * Cycle (2008 film), a Malayalam film
 * Cycle (2017 film), a Marathi film

Literature

 * Cycle (magazine), an American motorcycling enthusiast magazine
 * Literary cycle, a group of stories focused on common figures

Musical terminology

 * Cycle (music), a set of musical pieces that belong together
 * Cyclic form, a technique of construction involving multiple sections or movements
 * Interval cycle, a collection of pitch classes generated from a sequence of the same interval class
 * Song cycle, individually complete songs designed to be performed in a sequence as a unit

Albums

 * Cycle (album), a 1965 album by the Paul Horn Quintet
 * Cycle, a 2003 album by Merzbow
 * Cycle, a 2014 album by Buckethead
 * Cycles (Cartel album), 2009
 * Cycles (David Darling album), 1981
 * Cycles (The Doobie Brothers album), 1989
 * Cycles (Frank Sinatra album), 1968
 * Cycles (Redbone album), 1977
 * Cycles, a 2021 album by Sam Teskey

Songs

 * "Cycles", a 1968 song by Frank Sinatra on his album Cycles
 * "Cycles" (song), a 2018 song by Tove Lo
 * "Cycle" an interlude by Beck from Morning Phase, 2014

Biology

 * Cycle (gene), a gene in Drosophila melanogaster that encodes the CYCLE protein
 * Cyclic flower, in botany, one way in which flower parts may be arranged
 * Menstrual cycle

Computing

 * Cycles, a render engine for the software Blender
 * Instruction cycle, the time period during which a computer processes a machine language instruction
 * Reference cycle, where a software object refers directly or indirectly to itself

Mathematics

 * Cycle (algebraic topology), a simplicial chain with 0 boundary
 * Cycle (graph theory), a nontrivial path in a graph from a node to itself
 * Cycle graph, a graph that is itself a cycle
 * Cycle matroid, a matroid derived from the cycle structure of a graph
 * Cycle (sequence), a sequence with repeating values
 * Cycle detection, the algorithmic problem of detecting repetitions in sequences generated by iterated functions
 * Cycle, a set equipped with a cyclic order
 * Necklace (combinatorics), an equivalence classes of cyclically ordered sequences of symbols modulo certain symmetries
 * Cyclic (mathematics), a list of mathematics articles with "cyclic" in the title
 * Cyclic group, a group generated by a single element
 * Cyclic permutation, a basic permutation (all permutations are products of cycles)

Other uses in science and technology

 * Cycle (angular unit), a unit of plane angle or rotation
 * Charge cycle, charging and discharging a rechargeable battery
 * Thermodynamic cycle, a sequence of processes that transfer heat and work into and out of a system
 * Wave cycle, the repeatable part of a periodic wave
 * Cyclic, a primary flight control for helicopters
 * Cyclic compound
 * Cycle in cycle per second, which is a unit of frequency (rate of repetition)
 * A period in alternating current

Vehicles

 * Bicycle
 * Motorcycle
 * Quadricycle
 * Tricycle
 * Unicycle

Other uses

 * Cycling, a sport
 * Cycle (baseball), a single, double, triple, and home run (in any order) by the same player in one game
 * Cycle, North Carolina, a community in the United States