Phrase guide

major axis

noun · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

noun

Meaning 1

The longest diameter of an ellipse, running through the center and foci, with its ends being the widest points of the shape.

Definition source: English Wiktionary via Wiktextract

Topics: geometry, mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

The diameter of a circle.

Definition source: English Wiktionary via Wiktextract

Topics: geometry, mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

the longest axis of an ellipse or ellipsoid; passes through the two foci

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: axis

History

Etymology

No etymology was provided for this word.

Across languages

Translations

11 source translations are retained for this English entry.

  • Chinese Mandarin: 長軸 /长轴 (chángzhóu) — longest diameter of an ellipse
  • Czech: hlavní osa — longest diameter of an ellipse
  • Finnish: isoakseli — longest diameter of an ellipse
  • French: grand axe — longest diameter of an ellipse
  • German: Hauptachse — longest diameter of an ellipse
  • Hungarian: főtengely — longest diameter of an ellipse
  • Irish: mór-ais — longest diameter of an ellipse
  • Japanese: 長軸 (chōjiku) — longest diameter of an ellipse
  • Russian: гла́вная ось (glávnaja osʹ) — longest diameter of an ellipse
  • Russian: больша́я ось (bolʹšája osʹ) — longest diameter of an ellipse
  • Finnish: halkaisija — diameter of a circle — see also diameter