semidiurnal

[ sem-ee-dahy-ur-nl, sem-ahy- ]

adjective
  1. pertaining to, consisting of, or accomplished in half a day.

  2. occurring every 12 hours or twice each day.

Origin of semidiurnal

1
First recorded in 1585–95; semi- + diurnal

Words Nearby semidiurnal

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How to use semidiurnal in a sentence

British Dictionary definitions for semidiurnal

semidiurnal

/ (ˌsɛmɪdaɪˈɜːnəl) /


adjective
  1. of or continuing during half a day

  2. occurring every 12 hours

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