Meanings
- not comparableApproximately in time with the tides.
In the laboratory, the animals show a circatidal swimming rhythm, entrained by hydrostatic pressure stimulus.
2014, Tadashi Akiyama, “Chapter 4: Circatidal and Circadian Rhythms in Crustacean Swimming Behavior”, in Hideharu Numata, Barbara Helm, editors, Annual, Lunar, and Tidal Clocks, Springer, page 652 more examples
[…]green shore crab Carcinus maenas lay the foundation on the circatidal rhythmicity of coastal crabs and how such behaviour may be underpinned by internal physiological and neurological mechanisms.
2015, S. Y. Lee, “Chapter 71-9: Ecology of Brachyura”, in Peter Castro, Peter Davie, Danièle Guinot, Frederick Schram, Carel von Vaupel Klein, editors, Treatise on Zoology - Anatomy, Taxonomy, Biology: The Crustacea, Volume 9, Part C-1, BRILL, page 476For example, three different hypotheses have been put forward to explain circatidal and circadian rhythms in crustaceans (Palmer 1990, 1995).
2020, Rickey Cothran, Martin Thiel, editors, Reproductive Biology: The Natural History of the Crustacea, Volume 6, Oxford University Press, unnumbered page
Origin
circa (“approximately”) + tidal; modelled on circadian.
Full word history & related roots →Cite this entry
circatidal. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/circatidal
“circatidal.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/circatidal. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “circatidal,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/circatidal.
Source: circatidal on Wiktionary, CC BY-SA 4.0.