straight line

noun

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

Similar
line
Opposite
curve
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Meanings

nounstraight line (plural straight lines)

plural straight lines

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

    Synonyms: line

Synonyms & antonyms

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

Similar
line

More synonyms by meaning

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

Opposite
curve
Broader
line
Also see
line

Synonym sets from Open English WordNet, CC BY 4.0.

Translations

Ancient Greek εὐθεῖα γραμμή, εὐθεῖα
  • εὐθεῖα γραμμή (eutheîa grammḗ)line with no curvature
  • εὐθεῖα (eutheîa)line with no curvature
Catalan recta, línia recta
  • rectaline with no curvature
  • línia rectaline with no curvature
Chinese Mandarin 直線 /直线
  • 直線 /直线 (zhíxiàn)line with no curvature
Czech přímka
  • přímkaline with no curvature
Finnish suora viiva
  • suora viivaline with no curvature
French droite, ligne droite
  • droiteline with no curvature
  • ligne droiteline with no curvature
German Gerade, Luftlinie
  • Geradeline with no curvature
  • Luftlinieline with no curvature
Hindi सरल रेखा
  • सरल रेखा (saral rekhā)line with no curvature
Icelandic bein lína, lína
  • bein línaline with no curvature
  • línaline with no curvature
Irish líne dhíreach
  • líne dhíreachline with no curvature
Italian linea retta, retta
  • linea rettaline with no curvature
  • rettaline with no curvature
Japanese 直線
  • 直線 (chokusen)line with no curvature
Latin euthīa, līnea rēcta
  • euthīaline with no curvature
  • līnea rēctaline with no curvature
Malay garis lurus
  • garis lurusline with no curvature
Māori hihi
  • hihiline with no curvature
Polish linia prosta
  • linia prostaline with no curvature
Portuguese linha reta
  • linha retaline with no curvature
Romanian linie dreaptă, dreaptă
  • linie dreaptăline with no curvature
  • dreaptăline with no curvature
Russian пряма́я, пряма́я ли́ния
  • пряма́я (prjamája)line with no curvature
  • пряма́я ли́ния (prjamája línija)line with no curvature
Slovak priamka
  • priamkaline with no curvature
Spanish recta
  • rectaline with no curvature
Swahili mstari mnyoofu
  • mstari mnyoofuline with no curvature
Thai เส้นตรง
  • เส้นตรง (sên-dtrong)line with no curvature
Turkish doğru
  • doğruline with no curvature
Cite this entry
APA

straight line. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/straight%20line

MLA

“straight line.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/straight%20line. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “straight line,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/straight%20line.

Source: straight line on Wiktionary, CC BY-SA 4.0.