semimajor.
Of or pertaining to the semimajor axis, the long axis of an ellipse
Meaning & usage
Of or pertaining to the semimajor axis, the long axis of an ellipse
Less than major, but still significant
Where this word comes from
Etymology tree Proto-Indo-European *sem- Proto-Indo-European *sēmi Latin sēmi-bor. English semi- Proto-Indo-European *méǵh₂s Proto-Indo-European *-yōs Proto-Indo-European *méǵyōs Proto-Italic *majjōs Latin maiorder. Middle English major English major English semimajor From semi- + major.
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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.