semihourly

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adjective

Half-hourly: occurring every thirty minutes.

“The warship rang its semihourly bell, announcing it was now half past 10 o'clock.”

Scrabble 18
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Meanings

adjectivesemihourly (not comparable)

alternative semi-hourly

  1. not comparableproperlyHalf-hourly: occurring every thirty minutes.

    The warship rang its semihourly bell, announcing it was now half past 10 o'clock.

  2. not comparableinexactRoughly (but not exactly) hourly: occurring around every sixty minutes.
adverbsemihourly (not comparable)

alternative semi-hourly

  1. not comparableproperlyHalf-hourly: at intervals of 30 minutes.

    Samples were collected semihourly (on the hour and half hour) throughout the study.

  2. not comparableinexactRoughly (but not exactly) hourly: at intervals of around 60 minutes.

Synonyms & antonyms

Also see
half-hourly

Origin

From semi- + hourly.

Full word history & related roots →
Cite this entry
APA

semihourly. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/semihourly

MLA

“semihourly.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/semihourly. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “semihourly,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/semihourly.

Source: semihourly on Wiktionary, CC BY-SA 4.0.