Standard Lemma guide

gnomon

noun · 6 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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Received-Pronunciation: /ˈnəʊˌmɒn/
  • Received-Pronunciation: /ˈnəʊ.mən/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • General-American: /ˈnoʊˌmɑn/
  • General-American: /ˈnoʊ.mən/
  • rhymes with -əʊmɒn
  • rhymes with -əʊmən
  • rhymes with -oʊmɑn
  • rhymes with -oʊmən

1

noun

Meaning 1

An object such as a pillar or a rod that is used to tell time by the shadow it casts when the sun shines on it, especially the pointer on a sundial.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: cock, style

Antonyms: none provided

2

noun

Meaning 2

An object such as a pillar used by an observer to calculate the meridian altitude of the sun (that is, the altitude of the sun when it reaches the observer's meridian), for the purpose of determining the observer's latitude.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

The index of the hour circle of a globe.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

A plane figure formed by removing a parallelogram from a corner of a larger parallelogram.

Definition source: English Wiktionary via Wiktextract

Topics: geometry, mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

A number representing the increment between two figurate numbers (“numbers equal to the numbers of dots in geometric figures formed of dots”).

Definition source: English Wiktionary via Wiktextract

Usage: broadly

Topics: mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

indicator provided by the stationary arm whose shadow indicates the time on the sundial

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: indicator

History

Etymology

Borrowed from French gnomon, or directly from its etymon Latin gnōmōn, or directly from its etymon Ancient Greek γνώμων (gnṓmōn, “discerner, interpreter; carpenter’s square; gnomon of a sundial; (geometry) gnomon”), from γιγνώσκω (gignṓskō, “to be aware of; to perceive; to know”), ultimately from Proto-Indo-European *ǵneh3- (“to know”); the word is thus related to know. The geometry sense (sense 4) is from the resemblance of the plane figure to a carpenter’s square. Similarly, a gnomon in mathematics (sense 5) is also shaped like a carpenter’s square when depicted pictorially if the figurate numbers are squares.

Across languages

Translations

69 source translations are retained for this English entry.

  • Arabic: قياس (qiyās) — object used to tell time by the shadow it casts when the sun shines on it
  • Armenian: գնոմոն (gnomon) — object used to tell time by the shadow it casts when the sun shines on it
  • Basque: gnomon — object used to tell time by the shadow it casts when the sun shines on it
  • Belarusian: гно́ман (hnóman) — object used to tell time by the shadow it casts when the sun shines on it
  • Bulgarian: гно́мон (gnómon) — object used to tell time by the shadow it casts when the sun shines on it
  • Catalan: gnòmon — object used to tell time by the shadow it casts when the sun shines on it
  • Catalan: estil — object used to tell time by the shadow it casts when the sun shines on it
  • Chinese Mandarin: 晷針 /晷针 (guǐzhēn) — object used to tell time by the shadow it casts when the sun shines on it
  • Czech: gnómon — object used to tell time by the shadow it casts when the sun shines on it
  • Dutch: gnomon — object used to tell time by the shadow it casts when the sun shines on it
  • Estonian: gnoomon — object used to tell time by the shadow it casts when the sun shines on it
  • Finnish: gnomon — object used to tell time by the shadow it casts when the sun shines on it
  • French: gnomon — object used to tell time by the shadow it casts when the sun shines on it
  • French: style — object used to tell time by the shadow it casts when the sun shines on it
  • Friulian: gnomon — object used to tell time by the shadow it casts when the sun shines on it
  • Friulian: aste — object used to tell time by the shadow it casts when the sun shines on it
  • Galician: gnomon — object used to tell time by the shadow it casts when the sun shines on it
  • Georgian: გნომონი (gnomoni) — object used to tell time by the shadow it casts when the sun shines on it
  • German: Gnomon — object used to tell time by the shadow it casts when the sun shines on it
  • Greek: γνώμονας (gnómonas) — object used to tell time by the shadow it casts when the sun shines on it
  • Ancient Greek: γνώμων (gnṓmōn) — object used to tell time by the shadow it casts when the sun shines on it
  • Ancient Greek: κερκίς (kerkís) — object used to tell time by the shadow it casts when the sun shines on it
  • Hebrew: גנומון — object used to tell time by the shadow it casts when the sun shines on it
  • Hindi: शंकुक (śaṅkuk) — object used to tell time by the shadow it casts when the sun shines on it
  • Hungarian: gnómon — object used to tell time by the shadow it casts when the sun shines on it
  • Icelandic: sólsproti — object used to tell time by the shadow it casts when the sun shines on it
  • Ido: gnomono — object used to tell time by the shadow it casts when the sun shines on it
  • Irish: snáthaid — object used to tell time by the shadow it casts when the sun shines on it
  • Irish: snáthaid chlog gréine — object used to tell time by the shadow it casts when the sun shines on it
  • Italian: gnomone — object used to tell time by the shadow it casts when the sun shines on it
  • Italian: stilo — object used to tell time by the shadow it casts when the sun shines on it
  • Japanese: グノモン — object used to tell time by the shadow it casts when the sun shines on it
  • Korean: 규표 (gyupyo) — object used to tell time by the shadow it casts when the sun shines on it
  • Latvian: gnomons — object used to tell time by the shadow it casts when the sun shines on it
  • Lithuanian: gnomonas — object used to tell time by the shadow it casts when the sun shines on it
  • Malay: paku bayang — object used to tell time by the shadow it casts when the sun shines on it
  • Norwegian Bokmål: gnomon — object used to tell time by the shadow it casts when the sun shines on it
  • Occitan: gnomòn — object used to tell time by the shadow it casts when the sun shines on it
  • Persian: اشارهگر — object used to tell time by the shadow it casts when the sun shines on it
  • Persian: شاخص (šâxes) — object used to tell time by the shadow it casts when the sun shines on it
  • Polish: gnomon — object used to tell time by the shadow it casts when the sun shines on it
  • Portuguese: gnômon — object used to tell time by the shadow it casts when the sun shines on it
  • Russian: гно́мон (gnómon) — object used to tell time by the shadow it casts when the sun shines on it
  • Sanskrit: नृ (nṛ) — object used to tell time by the shadow it casts when the sun shines on it
  • Sanskrit: स्थाणु (sthāṇu) — object used to tell time by the shadow it casts when the sun shines on it
  • Serbo-Croatian: гно̀мо̄н — object used to tell time by the shadow it casts when the sun shines on it
  • Serbo-Croatian: gnòmōn — object used to tell time by the shadow it casts when the sun shines on it
  • Slovak: gnómon — object used to tell time by the shadow it casts when the sun shines on it
  • Slovene: gnómon — object used to tell time by the shadow it casts when the sun shines on it
  • Spanish: estilo — object used to tell time by the shadow it casts when the sun shines on it
  • Spanish: gnomon — object used to tell time by the shadow it casts when the sun shines on it
  • Spanish: nomon — object used to tell time by the shadow it casts when the sun shines on it
  • Spanish: estilete — object used to tell time by the shadow it casts when the sun shines on it
  • Swedish: gnomon — object used to tell time by the shadow it casts when the sun shines on it
  • Tamil: பா (pā) — object used to tell time by the shadow it casts when the sun shines on it
  • Turkish: gnomon — object used to tell time by the shadow it casts when the sun shines on it
  • Ukrainian: ґно́мон (gnómon) — object used to tell time by the shadow it casts when the sun shines on it
  • Friulian: gnomon — object used to calculate the meridian altitude of the sun
  • Polish: gnomon — object used to calculate the meridian altitude of the sun
  • Romanian: gnomon — object used to calculate the meridian altitude of the sun
  • Polish: gnomon — index of the hour circle of a globe
  • Bulgarian: гно́мон (gnómon) — plane figure formed by removing a parallelogram from a corner of a larger parallelogram
  • French: gnomon — plane figure formed by removing a parallelogram from a corner of a larger parallelogram
  • Friulian: gnomon — plane figure formed by removing a parallelogram from a corner of a larger parallelogram
  • Hungarian: gnómon — plane figure formed by removing a parallelogram from a corner of a larger parallelogram
  • Polish: gnomon — plane figure formed by removing a parallelogram from a corner of a larger parallelogram
  • Slovene: gnomon — plane figure formed by removing a parallelogram from a corner of a larger parallelogram
  • Urdu: علم — plane figure formed by removing a parallelogram from a corner of a larger parallelogram
  • Polish: gnomon — number representing the increment between two figurate numbers