Standard Lemma guide

incircle

noun · verb · 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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1

noun

Meaning 1

A circle within a polygon, especially a triangle, that is tangent to each side.

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

2

verb

Meaning 2

Archaic form of encircle.

Definition source: English Wiktionary via Wiktextract

Usage: alt-of, archaic

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Etymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Italic *n̥- Latin in-bor. Middle English in- English in- Proto-Indo-European *(s)ker-der. Ancient Greek κίρκος (kírkos)bor. Latin circus Proto-Indo-European *-lós Proto-Indo-European *-elós Proto-Italic *-elos Latin -ulus Latin circulus Old French cerclebor. Middle English circle English circle English incircle From in- + circle.

Across languages

Translations

17 source translations are retained for this English entry.

  • Bulgarian: вписана окръжност (vpisana okrǎžnost) — the circle within a polygon that is tangent to each side
  • Chinese Cantonese: 內接圓 /内接圆 (noi6 zip3 jyun4) — the circle within a polygon that is tangent to each side
  • Chinese Cantonese: 內切圓 /内切圆 (noi6 cit3 jyun4) — the circle within a polygon that is tangent to each side
  • Chinese Mandarin: 內接圓 /内接圆 (nèijiēyuán) — the circle within a polygon that is tangent to each side
  • Chinese Mandarin: 內切圓 /内切圆 (nèiqiēyuán) — the circle within a polygon that is tangent to each side
  • Czech: kružnice vepsaná — the circle within a polygon that is tangent to each side
  • Finnish: sisään piirretty ympyrä — the circle within a polygon that is tangent to each side
  • Finnish: sisäympyrä — the circle within a polygon that is tangent to each side
  • French: cercle inscrit — the circle within a polygon that is tangent to each side
  • German: Inkreis — the circle within a polygon that is tangent to each side
  • Greek: εγγεγραμμένος κύκλος (engegramménos kýklos) — the circle within a polygon that is tangent to each side
  • Hungarian: beírt kör — the circle within a polygon that is tangent to each side
  • Japanese: 内接円 (naisetsuen) — the circle within a polygon that is tangent to each side
  • Korean: 내접원 (naejeobwon) — the circle within a polygon that is tangent to each side
  • Portuguese: círculo inscrito — the circle within a polygon that is tangent to each side
  • Swedish: invändig tangeringscirkel — the circle within a polygon that is tangent to each side
  • Vietnamese: đường tròn nội tiếp — the circle within a polygon that is tangent to each side