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单词 -gon
释义

-goncomb. form

Primary stress is retained by the usual stressed syllable of the preceding element and vowels may be reduced accordingly, e.g. 12-gon Brit. /ˈtwɛlvɡɒn/, U.S. /ˈtwɛlvˌɡɑn/.
Forms: 1600s–1700s -gone, 1600s– -gon.
Origin: A borrowing from Latin. Etymons: Latin -gōnon, -gōnum.
Etymology: < classical Latin -gōnon (in e.g. octagōnon octagon n.), -gōnum (in e.g. trigōnum trigon n.) < ancient Greek -γωνον (in e.g. τετράγωνον tetragon n.), neuter of -γωνος ‘-angled’ < γωνία angle, corner < the base of γόνυ knee n. (see note) + -ία -ia suffix1.The long ō of ancient Greek γωνία can probably be explained as reflecting its regular development in Doric Greek, since the word was influentially used by Pythagorean mathematicians. Compare French -gone.
The second element (representing Greek -γων-ος, -ον, -angled) of heptagon n., hexagon n., etc., sometimes used with algebraic symbols (as m-gon, n-gon) which take the place of a Greek numeral; also with numeral prefixed, as 16-gon.
ΚΠ
1652 News from Lowe Countreys 2 For 'tis not..Trigonall, or Pentagonall, Or any of the Gones at all.]
1867–78 J. Wolstenholme Math. Probl. (ed. 2) Prob. 1853 In the moving circle is described a regular m-gon..The same epicycloid may also be generated by the corners of a regular n-gon.
1898 T. J. McCormack tr. H. Schubert Math. Ess. 125 He constructed an inscribed 16-gon.
1964 L. F. Tóth Regular Figures vi. 205 The vertices of a regular 12-gon.
This entry has not yet been fully updated (first published 1900; most recently modified version published online March 2022).
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