German

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German numbers (edit)
 ←  17 18 19  → 
    Cardinal: achtzehn
    Ordinal: achtzehnte
    Sequence adverb: achtzehntens
    Ordinal abbreviation: 18.
    Adverbial: achtzehnmal
    Adverbial abbreviation: 18-mal
    Multiplier: achtzehnfach
    Multiplier abbreviation: 18-fach
    Fractional: Achtzehntel
    Polygon: Achtzehneck
    Polygon abbreviation: 18-Eck
    Polygonal adjective: achtzehneckig
    Polygonal adjective abbreviation: 18-eckig

Etymology

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From Old High German ahtozehan, from Proto-Germanic *ahtōutehun, equivalent to acht +‎ zehn. Compare Dutch achttien, West Frisian achttjin, English eighteen, Danish atten.

Pronunciation

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  • IPA(key): /ˈaxˌt͡seːn/, (also) /ˈaxt͡sɛn/, /ˈaxt͡sən/
  • Audio; [ˈʔäχt͡sɛn]:(file)
  • Rhymes: -eːn

Numeral

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achtzehn

  1. (cardinal number) eighteen

Coordinate terms

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Derived terms

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Further reading

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