- Look up
cycle, cyclic, or
cyclical in Wiktionary, the free dictionary.
Cycle,
cycles, or
cyclic may
refer to:
Cyclic history, a
theory of
history Cyclical...
- The
menstrual cycle is a
series of
natural changes in
hormone production and the
structures of the
uterus and
ovaries of the
female reproductive system...
- The
water cycle, also
known as the
hydrologic cycle or the
hydrological cycle, is a
biogeochemical cycle that
describes the
continuous movement of water...
- The
Brayton cycle is a
thermodynamic cycle that
describes the
operation of
certain heat
engines that have air or some
other gas as
their working fluid...
- The
carbon cycle is the
biogeochemical cycle by
which carbon is
exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and
atmosphere of Earth...
- The cell
cycle, or cell-division
cycle, is the
series of
events that take
place in a cell that
cause it to
divide into two
daughter cells.
These events...
- The
nitrogen cycle is the
biogeochemical cycle by
which nitrogen is
converted into
multiple chemical forms as it
circulates among atmospheric, terrestrial...
- The Atkinson-
cycle engine is a type of
internal combustion engine invented by
James Atkinson in 1882. The
Atkinson cycle is
designed to
provide efficiency...
- The
Calvin cycle, light-independent reactions, bio
synthetic phase, dark reactions, or
photosynthetic carbon reduction (PCR)
cycle of
photosynthesis is...
- The
citric acid
cycle (CAC)—also
known as the
Krebs cycle, Szent-Györgyi-Krebs
cycle or the TCA
cycle (tricarboxylic acid
cycle)—is a
series of chemical...
