trigonometry

/ˌtɹɪɡəˈnɒmətɹi/

//ˌtɹɪɡəˈnɒmətɹi// noun

By · According to Wiktionary data (CC BY-SA) ·

"trigonometry" is a 12-letter English headword indexed on PlainSpell.

The verdict

“trigonometry” has 19 generated spelling variants in the English index at frequency #39,135. The variants make it a useful spelling check.

#39,135
frequency rank, English
27,828
“T” headwords
19
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - 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 calculati...

Key facts for trigonometry
PropertyValue
Headwordtrigonometry
LanguageEnglish
Part of speechNoun
IPA/ˌtɹɪɡəˈnɒmətɹi/
Letters12
Frequency rank#39,135
Misspellings tracked19
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “trigonometry” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). trigonometry lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 19 spelling variants around trigonometry (IPA /ˌtɹɪɡəˈnɒmətɹi/), anoun. Corpus frequency is #39,135 among 27,828 “T” headwords. Dominant gloss: "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 calculati...".

Our generated misspelling index lists 19 likely wrong-spelling variants for trigonometry, with forms such as "rtigonometry", "tirgonometry", and "trgionometry". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. No confusable counterpart is on file for this word, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: PIE word *tréyes From 1610s, from New Latin trigōnometria, from Ancient Greek τρίγωνον (trígōnon, “triangle”) + μέτρον (métron, “measure”), equivalent to trigono- + -metry. The correct English form is trigonometry, spelled T-R-I-G-O-N-O-M-E-T-R-Y.

Definition

  1. 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.

Etymology

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

Synonyms

trig

This word in other languages

trigonometría(Español)trigonométrie(Français)Trigonometrie(Deutsch)trigonometria(Português)

Common misspellings

Also misspelled as:

  • rtigonometry
  • tirgonometry
  • trgionometry
  • triggonometry
  • trignoometry
  • trigonmoetry
  • trigonnometry
  • trigonoemtry
  • trigonomerty
  • trigonometrry
  • trigonometryy
  • trigonomettry
  • trigonometyr
  • trigonommetry
  • trigonomtery
  • trigoonmetry
  • triognometry
  • trrigonometry
  • ttrigonometry

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of trigonometry - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

rtigonometry2tirgonometry2trgionometry2triggonometry1trignoometry2trigonmoetry2trigonnometry1trigonoemtry2
Edit distance from "trigonometry"

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "trigonometry"?
"trigonometry" is spelled T-R-I-G-O-N-O-M-E-T-R-Y. The IPA pronunciation is /ˌtɹɪɡəˈnɒmətɹi/.
What does "trigonometry" mean?
As a noun, "trigonometry" means: 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 calculati...
What are common misspellings of "trigonometry"?
Common misspellings include "rtigonometry", "tirgonometry", "trgionometry", "triggonometry", "trignoometry". The correct spelling is "trigonometry".
How do you pronounce "trigonometry"?
The IPA (International Phonetic Alphabet) transcription for "trigonometry" is /ˌtɹɪɡəˈnɒmətɹi/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "trigonometry"?
PIE word *tréyes From 1610s, from New Latin trigōnometria, from Ancient Greek τρίγωνον (trígōnon, “triangle”) + μέτρον (métron, “measure”), equivalent to trigono- + -metry. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “trigonometry”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is T-R-I-G-O-N-O-M-E-T-R-Y - every other letter order is a misspelling in standard orthography.
  • Say it as /ˌtɹɪɡəˈnɒmətɹi/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more English words and confusable pairs in the same reference. English words

Same frequency band

Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list