zeroth

• zeroeth

From zero +‎ -th (ordinal suffix).

• (UK, New Zealand, General Australian) IPA^(key): /ˈzɪəɹəʊθ/

• Audio (Southern England):

  (file)

• (US) enPR: zîrʹōth, zēʹrōth, IPA^(key): /ˈzɪɹoʊθ/, /ˈziɹoʊθ/
• Rhymes: -ɪəɹəʊθ, -iːɹəʊθ
• Hyphenation: zeroth

zeroth (not comparable)

1. (mathematics) In the initial position in a sequence whose elements are numbered starting at zero; the ordinal number corresponding to zero.

   The zeroth order polynomial approximation is constant.

2. Corresponding to a position preceding the first.

   A and C are in equilibrium following the Zeroth Law of Thermodynamics.

• nothingth
• noughth (rare)

• null
• 0th