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Classes starting with C
(Rhythm) Internal rhythm, free running in constant conditions with a period slightly deviating from the environmental cycle, by which it is synchronized in nature (in contrast to non circa-rhythm).
Circa-rhythm with a naturally synchronized period of 24 hours.
Circa-rhythm with a naturally synchronized period of 24.8 h (sidereal day or lunar day).
Circa-rhythm with a naturally synchronized period of the lunar cycle (either synodic cycle 29.53 days, or sidereal cycle 13.66 days).
Circa-rhythm with a naturally synchronized period of a year.
Circa-rhythm with a naturally synchronized period of half the lunar cycle (semi-synodic or syzygic cycle: 14.76 days; semi-sidereal cycle 13.66 days).
Circa-rhythm with a naturally synchronized period of the prevailing tidal cycle (12.4 h or otherwise).
Timing mechanism, in which the parameter studied, is not involved in the causal loop (in contrast to "hourglass").
Events occurring twice a day, i.e. at dawn and dusk.
Recurrence of (an) event(s), without necessarily being of a periodic nature (in contrast to "rhythm").
