Phrase guide

straight line

noun · 2 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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1

noun

Meaning 1

A line with no curvature; a line with constant direction. The path of shortest length between two points.

Definition source: English Wiktionary via Wiktextract

Topics: geometry, mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: line

Antonyms: none provided

2

noun

Meaning 2

a line traced by a point traveling in a constant direction; a line of zero curvature

Definition source: Princeton WordNet 3.0

Examples

  • the shortest distance between two points is a straight line

Meaning relationships

Synonyms: none provided

Antonyms: curve

Broader terms: line

Narrower terms: perpendicular, asymptote, tangent, secant, radius, diameter, chord, element, diagonal, bias, vector

History

Etymology

No etymology was provided for this word.

Across languages

Translations

42 source translations are retained for this English entry.

  • Armenian: ուղիղ (uġiġ) — line with no curvature
  • Catalan: recta — line with no curvature
  • Catalan: línia recta — line with no curvature
  • Chinese Mandarin: 直線 /直线 (zhíxiàn) — line with no curvature
  • Czech: přímka — line with no curvature
  • Finnish: suora viiva — line with no curvature
  • French: droite — line with no curvature
  • French: ligne droite — line with no curvature
  • Galician: liña recta — line with no curvature
  • German: Gerade — line with no curvature
  • German: Luftlinie — line with no curvature
  • Ancient Greek: εὐθεῖα γραμμή (eutheîa grammḗ) — line with no curvature
  • Ancient Greek: εὐθεῖα (eutheîa) — line with no curvature
  • Hindi: सरल रेखा (saral rekhā) — line with no curvature
  • Icelandic: bein lína — line with no curvature
  • Icelandic: lína — line with no curvature
  • Ido: streko — line with no curvature
  • Ingrian: soora — line with no curvature
  • Irish: líne dhíreach — line with no curvature
  • Italian: linea retta — line with no curvature
  • Italian: retta — line with no curvature
  • Japanese: 直線 (chokusen) — line with no curvature
  • Kazakh: түзу (tüzu) — line with no curvature
  • Latin: euthīa — line with no curvature
  • Latin: līnea rēcta — line with no curvature
  • Malay: garis lurus — line with no curvature
  • Māori: hihi — line with no curvature
  • Navajo: kézdongo ídzo — line with no curvature
  • Piedmontese: reta — line with no curvature
  • Polish: linia prosta — line with no curvature
  • Portuguese: linha reta — line with no curvature
  • Romanian: linie dreaptă — line with no curvature
  • Romanian: dreaptă — line with no curvature
  • Russian: пряма́я (prjamája) — line with no curvature
  • Russian: пряма́я ли́ния (prjamája línija) — line with no curvature
  • Sicilian: rittufilu — line with no curvature
  • Slovak: priamka — line with no curvature
  • Spanish: recta — line with no curvature
  • Swahili: mstari mnyoofu — line with no curvature
  • Telugu: సరళరేఖ (saraḷarēkha) — line with no curvature
  • Thai: เส้นตรง (sên-dtrong) — line with no curvature
  • Turkish: doğru — line with no curvature