Standard Lemma guide

trigonometry

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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  • /ˌtɹɪɡəˈnɒmətɹi/
  • Southern-England: Recorded audio is listed in the source snapshot.

1

noun

Meaning 1

The branch of mathematics that deals with the relationships between the sides and angles of (in particular) right-angled triangles, as represented by the trigonometric functions, and with calculations based on said relationships.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: geometry, mathematical-analysis, mathematics, sciences

Examples

  • Trigonometry emerged in the Hellenistic world during the 3rd century BCE from applications of geometry to astronomy; the Greeks focused on the calculation of chords, while mathematicians in India created the earliest known tables of values for trigonometric functions such as sine.
  • Historically, trigonometry has been applied in areas such as geodesy, surveying, celestial mechanics and navigation.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

the mathematics of triangles and trigonometric functions

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: trig

Antonyms: none provided

Broader terms: pure mathematics

Narrower terms: spherical trigonometry, triangulation

History

Etymology

PIE word *tréyes From 1610s, from New Latin trigōnometria, from Ancient Greek τρίγωνον (trígōnon, “triangle”) + μέτρον (métron, “measure”), equivalent to trigono- + -metry.

Across languages

Translations

83 source translations are retained for this English entry.

  • Albanian: trigonometria — branch of mathematics
  • Arabic: عِلْم اَلْمُثَلَثَات (ʕilm al-muṯalaṯāt) — branch of mathematics
  • Arabic: عِلْم حِسَاب اَلْمُثَلَثَات (ʕilm ḥisāb al-muṯalaṯāt) — branch of mathematics
  • Arabic: حِسَاب اَلْمُثَلَثَات (ḥisāb al-muṯalaṯāt) — branch of mathematics
  • Assyrian Neo-Aramaic: ܡܡܲܠܠܘܼܬ ܡܬܲܠܬܹ̈ܐ (mmallūt mtaltē) — branch of mathematics
  • Armenian: եռանկյունաչափություն (eṙankyunačʻapʻutʻyun) — branch of mathematics
  • Azerbaijani: triqonometriya — branch of mathematics
  • Basque: trigonometria — branch of mathematics
  • Belarusian: трыганаметрыя (tryhanamjetryja) — branch of mathematics
  • Bengali: ত্রিকোণমিতি (trikōnmiti) — branch of mathematics
  • Bulgarian: тригономе́трия (trigonométrija) — branch of mathematics
  • Burmese: တြီဂိုနိုမေတြီ (triguinuime-tri) — branch of mathematics
  • Catalan: trigonometria — branch of mathematics
  • Chinese Mandarin: 三角法 (sānjiǎofǎ) — branch of mathematics
  • Chinese Mandarin: 三角學 /三角学 (sānjiǎoxué) — branch of mathematics
  • Czech: trigonometrie — branch of mathematics
  • Danish: trigonometri — branch of mathematics
  • Dutch: trigonometrie — branch of mathematics
  • Dutch: goniometrie — branch of mathematics
  • Dutch: driehoeksmeetkunde — branch of mathematics
  • Esperanto: trigonometrio — branch of mathematics
  • Estonian: trigonomeetria — branch of mathematics
  • Farefare: kɔkatãmakrʋm — branch of mathematics
  • Farefare: tãkɔkamakrʋm — branch of mathematics
  • Finnish: trigonometria — branch of mathematics
  • French: trigonométrie — branch of mathematics
  • Galician: trigonometría — branch of mathematics
  • Georgian: ტრიგონომეტრია (ṭrigonomeṭria) — branch of mathematics
  • German: Trigonometrie — branch of mathematics
  • Greek: τριγωνομετρία (trigonometría) — branch of mathematics
  • Hebrew: טְרִיגוֹנוֹמֶטְרִיָּה (trigonometriya) — branch of mathematics
  • Hindi: त्रिकोणमिति (trikoṇmiti) — branch of mathematics
  • Hungarian: trigonometria — branch of mathematics
  • Icelandic: hornafræði — branch of mathematics
  • Indonesian: trigonometri — branch of mathematics
  • Irish: triantánacht — branch of mathematics
  • Italian: trigonometria — branch of mathematics
  • Japanese: 三角法 (sankakuhō) — branch of mathematics
  • Kazakh: тригонометрия (trigonometriä) — branch of mathematics
  • Kazakh: تريگونومەتريا (trigonometria) — branch of mathematics
  • Kazakh: trigonometria — branch of mathematics
  • Khmer: ត្រីកោណមាត្រ (trəykaonmiətrɑɑ) — branch of mathematics
  • Korean: 삼각법 (samgakbeop) — branch of mathematics
  • Central Kurdish: سێگۆشەزانی (sêgoşezanî) — branch of mathematics
  • Northern Kurdish: sêgoşenasî — branch of mathematics
  • Northern Kurdish: sêgoşezanî — branch of mathematics
  • Northern Kurdish: trîgonometrî — branch of mathematics
  • Latin: trigonometria — branch of mathematics
  • Latvian: trigonometrija — branch of mathematics
  • Lithuanian: trigonometrija — branch of mathematics
  • Macedonian: тригономе́трија (trigonométrija) — branch of mathematics
  • Malay: trigonometri — branch of mathematics
  • Mongolian: тригономэтр (trigonometr) — branch of mathematics
  • Mongolian: гуравалжлэлийн арга (guravalžleliin arga) — branch of mathematics
  • Mongolian: ᠲᠷᠢᠭᠣᠨᠣᠮᠧᠲ᠋ᠷᠢ (triɣonomētri) — branch of mathematics
  • Mongolian: ᠭᠤᠷᠪᠠᠯᠵᠢᠯᠡᠯ ᠦᠨ ᠠᠷᠭ᠎ᠠ (ɣurbalǰilel-ün arɣ-a) — branch of mathematics
  • Norwegian Bokmål: trigonometri — branch of mathematics
  • Occitan: trigonometria — branch of mathematics
  • Persian: مثلثات (mosalasât) — branch of mathematics
  • Polish: trygonometria — branch of mathematics
  • Portuguese: trigonometria — branch of mathematics
  • Romanian: trigonometrie — branch of mathematics
  • Russian: тригономе́трия (trigonométrija) — branch of mathematics
  • Sindhi: ٽِڪُنڊپيمائِش (ṭikũḍpemāiś) — branch of mathematics
  • Slovak: trigonometria — branch of mathematics
  • Spanish: trigonometría — branch of mathematics
  • Swedish: trigonometri — branch of mathematics
  • Tagalog: tatsihaan — branch of mathematics
  • Tagalog: trigonometriya — branch of mathematics
  • Tamil: முக்கோணவியல் (mukkōṇaviyal) — branch of mathematics
  • Tamil: திரிகோணமிதி (tirikōṇamiti) — branch of mathematics
  • Telugu: త్రికోణమితి (trikōṇamiti) — branch of mathematics
  • Thai: ตรีโกณมิติ (dtrii-goon-mí-dtì) — branch of mathematics
  • Turkish: trigonometri — branch of mathematics
  • Turkmen: trigonometriýa — branch of mathematics
  • Ukrainian: тригономе́трія (tryhonométrija) — branch of mathematics
  • Urdu: مثلثیات (musalsiyāt) — branch of mathematics
  • Uzbek: trigonometriya — branch of mathematics
  • Vietnamese: lượng giác học — branch of mathematics
  • Vietnamese: lượng giác — branch of mathematics
  • Volapük: trigonomet — branch of mathematics
  • Welsh: trigonometreg — branch of mathematics
  • Yiddish: טריגאָנאָמעטריע (trigonometrye) — branch of mathematics
Real reading context

trigonometry in complete knowledge articles