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alternate

/ɒlˈtɜː(ɹ).nət/ adjective

In Latin: alternus Wiktionary

adjective Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about alternate at Wordnik → Where our words come from →

  1. Happening by turns; one following the other in succession of time or place; first one and then the other (repeatedly).
  2. Alternating; (of e.g. a pair of tinctures which a charge is coloured) succeeding in turns, or (relative to the field) counterchanged.
  3. Designating the members in a series, which regularly intervene between the members of another series, as the odd or even numbers of the numerals; every other; every second.
    the alternate members 1, 3, 5, 7, etc.

noun

  1. That which alternates with something else; vicissitude.
  2. A substitute; an alternative; one designated to take the place of another, if necessary, in performing some duty.
    An alternate for the first-string quarterback played the entire first half.
  3. A proportion derived from another proportion by interchanging the means.

verb

  1. To perform by turns, or in succession; to cause to succeed by turns; to interchange regularly.
  2. To happen, succeed, or act by turns; to follow reciprocally in place or time; followed by with.
    The flood and ebb tides alternate with each other.
  3. To vary by turns.
    The land alternates between rocky hills and sandy plains.

Origin

Borrowed from Latin alternātus, the perfect passive participle of Latin alternō (“to take turns”) (see -ate (1,2 and 3)), from alternus (“one after another, by turns”), from alter (“other”) + -nus. Doublet of altern; see also alter.

From Wiktionary, via Kaikki.org (CC BY-SA)