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Definitions of semidiurnal

The word semidiurnal uses 11 letters: a, d, e, i, i, l, m, n, r, s, u

semidiurnal is playable in:

Words With Friends18
Scrabble US14
Scrabble UK14

Meanings of semidiurnal

a. - Pertaining to, or accomplished in, half a day, or twelve hours; occurring twice every day.

a. - Pertaining to, or traversed in, six hours, or in half the time between the rising and setting of a heavenly body; as, a semidiurnal arc.

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