denoting a term in a series that precedes the term otherwise regarded as the first term
Word origin
C20: from zero + -th2
zeroth in American English
(ˈzɪərouθ)
adjective
coming in a series before the first
the zeroth level of energy
Word origin
[1895–1900; zero + -th1]This word is first recorded in the period 1895–1900. Other words that entered Englishat around the same time include: apothecaries' measure, calling card, cutback, flamenco, hit-and-run
Examples of 'zeroth' in a sentence
zeroth
You forgot about the zeroth law of thermodynamics.