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acrophase

noun

The time period in a cycle during which the cycle crests or peaks, especially the upper part of a sine wave fitted to a measurement of a circadian pattern or other biological rhythm.

“The acrophase of the metabolic process ran from shortly mid-morning until sunset, with the peak amplitude recorded in mid-afternoon.”

Opposite

trough bathyphase

Scrabble 16

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Meanings

nounacrophase (plural acrophases)

plural acrophases

medicineThe time period in a cycle during which the cycle crests or peaks, especially the upper part of a sine wave fitted to a measurement of a circadian pattern or other biological rhythm.
The acrophase of the metabolic process ran from shortly mid-morning until sunset, with the peak amplitude recorded in mid-afternoon.

Synonyms & antonyms

Opposite

trough bathyphase

Origin

From acro- + phase.

Full word history & related roots →

Translations

Portuguese acrofase

acrofasetime period during which a cycle peaks

Cite this entry

APA

acrophase. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/acrophase

MLA

“acrophase.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/acrophase. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “acrophase,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/acrophase.

Source: acrophase on Wiktionary, CC BY-SA 4.0.