Where does “pentadecathlon” come from?

pentadecathlon (English) comes from English pentadeca-, from English deca-, from French déca-, from Latin decās, from Ancient Greek δεκάς, from Ancient Greek -ᾰ́ς, from Proto-Indo-European -ónts, from Hungarian önt — sound, voice.

pentadecathlon (English): A sporting event consisting of fifteen different sports or contests

Definitions

  1. A sporting event consisting of fifteen different sports or contests

Ancestry of “pentadecathlon”, step by step

StepLanguageWordMeaning
1Englishpentadeca-API; fifteen
2Englishdeca-Greek number...
3Frenchdéca-deca-
4Latindecāsa decade (period of ten years)
5Ancient Greekδεκάςthe number ten; a group of ten, decade
6Ancient Greek-ᾰ́ςgroup of
7Proto-Indo-European-óntsDerives nouns denoting body parts
8Hungarianöntto pour; to cast; accusative singular of ön
9Hungarianönyou
10Hungarianön-self-
11Turkishönfront
12Ottoman Turkishاوكvoice (of human or animal); sound
13Proto-Turkicǖnsound, voice
Every word from Proto-Turkic ǖnEvery word from Ancient Greek -ᾰ́ςEvery word from English deca-
pentadecathlon — Etymology, Origin & Word History | Etymology Explorer