Zeroth

//ˈzɪɹoʊθ// adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    In the initial position in a sequence whose elements are numbered starting at zero; the ordinal number corresponding to zero. not-comparable

    "The zeroth order polynomial approximation is constant."

  2. 2
    Corresponding to a position preceding the first. not-comparable

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

Adjective
  1. 1
    preceding even the first wordnet

Synonyms

All synonyms
nothingthnoughthordinal

Example

More examples

"In my opinion, the fact that we can't easily send the zeroth one should be a reason for us not to try to send and sell the second one."

Etymology

From zero + -th (ordinal suffix).

Related phrases

zeroth gradeordinal number

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.