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semiannual

[sem-ee-an-yoo-uh l, sem-ahy-] /ˌsɛm iˈæn yu əl, ˌsɛm aɪ-/
adjective
1.
occurring, done, or published every half year or twice a year; semiyearly.
2.
lasting for half a year:
a semiannual plant.
Origin of semiannual
1785-1795
1785-95; semi- + annual
Related forms
semiannually, adverb
Can be confused
biannual, biennial, semiannual (see usage note at bi-)
Usage note
See bi-1.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for semiannually
Historical Examples
  • He had established a branch of his gigantic business there and himself rolled semiannually from coast to coast in his private car.

    Play the Game! Ruth Comfort Mitchell
  • I am held accountable to the Secretary of the Treasury semiannually for the manner in which the appropriation has been expended.

    Red Men and White Owen Wister
  • Weekly or monthly or yearly, sometimes semiannually, and so forth.

    Warren Commission (8 of 26): Hearings Vol. VIII (of 15) The President's Commission on the Assassination of President Kennedy
  • The cockroach is born on the fust ov May and the fust ov November semiannually, and is reddy for use in fifteen days from date.

British Dictionary definitions for semiannually

semiannual

/ˌsɛmɪˈænjʊəl/
adjective
1.
occurring every half-year
2.
lasting for half a year
Derived Forms
semiannually, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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