tropic.
Either of the two parallels of latitude 23°26′ north and south of the equator; the farthest points at which the sun can be directly overhead; the boundaries of the torrid zone or tropics.
Meaning & usage
Either of the two parallels of latitude 23°26′ north and south of the equator; the farthest points at which the sun can be directly overhead; the boundaries of the torrid zone or tropics.
The component of tone or rhetoric in a sentence.
Where this word comes from
From Late Latin tropicus (“of or pertaining to the solstice, as a noun, one of the tropics”), from Ancient Greek τροπικός (tropikós, “of or pertaining to a turn or change; or the solstice; or a trope or figure; tropic; tropical; etc.”), from τροπή (tropḗ, “turn; solstice; trope”).
Of, or relating to the tropics; tropical.
Of, or relating to the tropics; tropical. Hot and humid.
Having the quality of indirectly inducing a biological or chemical change in a system or substrate.
The binding of oxygen to hemoglobin is allosterically regulated by various tropic factors, such as BPG and acidity.
Pertaining to, involving, or of the nature of a trope or tropes.
Where this word comes from
From Late Latin tropicus (“of or pertaining to the solstice, as a noun, one of the tropics”), from Ancient Greek τροπικός (tropikós, “of or pertaining to a turn or change; or the solstice; or a trope or figure; tropic; tropical; etc.”), from τροπή (tropḗ, “turn; solstice; trope”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.