tangent

T1A1N1G2E1N1T1
/ˈtæn.d͡ʒənt/

noun

A straight line touching a curve at a single point without crossing it there.

“I believe we went off onto a tangent when we started talking about monkeys on unicycles at his retirement party.”

Less commonScrabble 8

Meanings

nountangent (plural tangents)

plural tangents

  1. differential geometryA straight line touching a curve at a single point without crossing it there.
    1 more example

    One feature of the body, which is constructed of pressed-steel members, is the contour of the sides. They are in the form of a continuous radius from the bottom side to the cant rail, and to enable flat glass windows to be fitted the side panels are pressed around the window opening, forming a tangent to the curved bodyside.

    1951 May, “British Railways Standard Coaches”, in Railway Magazine, page 327

    Synonyms: tangent line

  2. mathematicsA function of an angle that gives the ratio of the sine to the cosine, in either the real or complex numbers. Symbols: tan, tg.
  3. transferred senseA course suddenly and unexpectedly divergent from one which was previously being followed (especially one embarked on before reaching the end of the previous course).
    1. transferred senseA new topic of discussion unrelated to the one which came before it, arrived at due to a single (peripheral or trivial) point in common with it.

      I believe we went off onto a tangent when we started talking about monkeys on unicycles at his retirement party.

      2 more examples

      “Uncle Barnaby was always father and mother to me,” Benson broke in; then after a pause his mind flew off at a tangent. “Is old Hannah all right—in the will, I mean?”

      1928, Lawrence R. Bourne, chapter 1, in Well Tackled!

      Jon & Kate Plus 8 is a show based on two facts: (1) Jon and Kate Gosselin have eight children, and (2) the word ‘Kate’ rhymes with the word ‘eight’. One suspects that if Kate were ever to have another child, a shady network executive would urge her to put it in a binbag with a brick and drop it down a well. But this is just a horrifying tangent.

      2009 May 22, Stuart Heritage, “Jon & Kate Latest: People You Don’t Know Do Crap You Don’t Care About”, in Hecklerspray, archived from the original on 15 Apr 2024
  4. artA visual interaction between two or more lines or edges that creates a perceived relationship between them, often in a way that the artist did not intend.
  5. entertainmentA small metal blade in a clavichord or other instrument that strikes the strings to produce sound.
adjectivetangent (not comparable)
  1. not comparablegeometryTouching a curve at a single point but not crossing it at that point.
  2. not comparableOf a topic, only loosely related to a main topic.

    Synonyms: tangential

  3. not comparablerail transportStraight; not horizontally curved.

    The collision occurred on a two-mile stretch of tangent track.

verbtangent (third-person singular simple present tangents, present participle tangenting, simple past and past participle tangented)

present singular third person tangents · participle present tangenting · participle past tangented · past tangented

  1. informalintransitiverareSynonym of fly off at a tangent (“to digress from a topic”).

    Stop tangenting, please, thanks!

    2011 May 19, BaSSiStiSt, “Questions for WAB - 5/19/11”, in alt.sports.basketball.nba.la-lakers (Usenet)
    2 more examples

    OK. Did that have anything to do with what I was saying? I just wanna know if you're tangenting or making an oblique connection I'm missing.

    1999 August 12, Robin Lee Powell, “Are WOMEN the SUPERIOR GENDER?”, in soc.sexuality.general (Usenet)

    I apoligise^([sic]) if anyone found these back-references more helpful than the answers that I gave -- I tried to cover all the salient points but -- well... "everything is deeply intermingled" and it's hard to know where to stop tangenting.

    2001 November 16, Helpful GM, “CL: you gain experience???”, in comp.sys.mac.games.adventure (Usenet)

    Synonyms: fly off at a tangent

Synonyms & antonyms

nounA straight line touching a curve at a single point without crossing it there.

adjectiveOf a topic, only loosely related to a main topic.

Similar

verbSynonym of fly off at a tangent (“to digress from a topic”).

More synonyms by meaning

nounratio of the opposite to the adjacent side of a right-angled triangle

Similar

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Proto-Indo-European*teh₂g-
  2. Proto-Italic*tangō
  3. Latintangō
  4. Latintangēns
  5. Latintangentem
  6. Englishtangent

Borrowed from Latin tangentem, the accusative of tangēns (“touching”) (in the phrase līnea tangēns (“a touching line”)), the present participle of the verb tangō (“touch”, verb), from Proto-Italic *tangō, from Proto-Indo-European *teh₂g- (“to touch”). Cognate with Old English þaccian (“to touch lightly, pat, stroke”). More at thack, thwack.

Full word history & related roots →

Translations

Afrikaans tangens, tangense
  • tangensin trigonometry
  • tangensein trigonometry
  • raaklynin trigonometry
  • raaklynein trigonometry
Arabic مُمَاسّ, ظِلّ الزَّاوِيَة
  • مُمَاسّ (mumāss)in geometry
  • ظِلّ الزَّاوِيَة (ẓill az-zāwiya)in trigonometry
Bulgarian допира́телна, отклонение
  • допира́телна (dopirátelna)in geometry
  • отклонение (otklonenie)nearly unrelated topic
  • та́нгенс (tángens)in trigonometry
  • допирателен (dopiratelen)in geometry
  • тангенциален (tangencialen)in geometry
Catalan tangent, tangent
  • tangentin geometry
  • tangentnearly unrelated topic
  • tangentin trigonometry
  • tangentin geometry
Chinese Mandarin 切線 /切线, 正切
  • 切線 /切线 (qiēxiàn)in geometry
  • 正切 (zhèngqiē)in trigonometry
Czech tečna, tangens
  • tečnain geometry
  • tangensin trigonometry
Danish tangent, sidespor
  • tangentin geometry
  • sidespornearly unrelated topic
  • tangensin trigonometry
Dutch raaklijn, tangens
  • raaklijnin geometry
  • tangensin trigonometry
Esperanto tanĝanto, parentezaĵo
  • tanĝantoin geometry
  • parentezaĵonearly unrelated topic
  • tangentoin trigonometry
Estonian puutuja
  • puutujain geometry
Finnish tangentti, sivuaja
  • tangenttiin geometry
  • sivuajain geometry
  • sivuraidenearly unrelated topic
  • harhapolkunearly unrelated topic
  • tangenttiin trigonometry
French tangente, tangente
  • tangentein geometry
  • tangentein trigonometry
  • tangentein geometry
German Tangente, Nebensache
  • Tangentein geometry
  • Nebensachenearly unrelated topic
  • Tangensin trigonometry
Greek εφαπτομένη, εφαπτομένη
  • εφαπτομένη (efaptoméni)in geometry
  • εφαπτομένη (efaptoméni)in trigonometry
Hebrew טנגנס
  • טנגנס (tangens)in trigonometry
Hindi स्पर्शरेखा
  • स्पर्शरेखा (sparśarekhā)in geometry
Hungarian érintő, tangens
  • érintőin geometry
  • tangensin trigonometry
Icelandic snertill, tangens
  • snertillin geometry
  • tangensin trigonometry
Italian tangente, tangente
  • tangentein geometry
  • tangentein trigonometry
  • tangentein geometry
Japanese 接線, タンジェント
  • 接線 (sessen)in geometry
  • タンジェント (tanjento)in trigonometry
  • 正接 (seisetsu)in trigonometry
Korean 접선, 탄젠트
  • 접선 (jeopseon)in geometry
  • 탄젠트 (tanjenteu)in trigonometry
Māori pātapa, pātapa
  • pātapain geometry
  • pātapain trigonometry
Norwegian Bokmål tangent, tangens
  • tangentin geometry
  • tangensin trigonometry
Persian مماس, تانژانت
  • مماس (momâss)in geometry
  • تانژانت (tānžānt)in trigonometry
  • ظل (zel)in trigonometry
Polish styczna, punkt wspólny
  • stycznain geometry
  • punkt wspólnynearly unrelated topic
  • tangensin trigonometry
Portuguese tangente, tangente
  • tangentein geometry
  • tangentein trigonometry
  • tangentein geometry
Romanian tangentă, tangentă
  • tangentăin geometry
  • tangentăin trigonometry
Russian каса́тельная, отклоне́ние от те́мы
  • каса́тельная (kasátelʹnaja)in geometry
  • отклоне́ние от те́мы (otklonénije ot témy)nearly unrelated topic
  • отступле́ние (otstuplénije)nearly unrelated topic
  • побо́чная те́ма (pobóčnaja téma)nearly unrelated topic
  • де́бри (débri)nearly unrelated topic
  • каки́е-то де́бри (kakíje-to débri)nearly unrelated topic
  • не в ту степь (ne v tu stepʹ)nearly unrelated topic
  • та́нгенс (tángens)in trigonometry
Slovak dotyčnica
  • dotyčnicain geometry
Spanish tangente, tangente
  • tangentein geometry
  • tangentein trigonometry
  • tangentein geometry
Swedish tangent, tangens
  • tangentin geometry
  • tangensin trigonometry
Tagalog dikit, tanway
  • dikitin geometry
  • tanwayin trigonometry
Thai เส้นสัมผัส, แทนเจนต์
  • เส้นสัมผัสin geometry
  • แทนเจนต์in trigonometry
Turkish teğet, tanjant
  • teğetin geometry
  • tanjantin trigonometry
Ukrainian доти́чна, ліри́чний ві́дступ
  • доти́чна (dotýčna)in geometry
  • ліри́чний ві́дступ (lirýčnyj vídstup)nearly unrelated topic
  • та́нгенс (tánhens)in trigonometry
Vietnamese tiếp tuyến, tang
  • tiếp tuyếnin geometry
  • tangin trigonometry

Rhymes & wordplay

Rhymes with tangent

All rhymes →

Anagrams

Cite this entry
APA

tangent. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/tangent

MLA

“tangent.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/tangent. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “tangent,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/tangent.

Source: tangent on Wiktionary, CC BY-SA 4.0.