Diurnal arc


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the arc described by the sun during the daytime or while above the horizon; hence, the arc described by the moon or a star from rising to setting.

See also: Diurnal

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Still a semitone up from the opening, a foreshortened return to the harmonic restlessness and rhythmic palpitations of the opening gives way to the mob rule of a contrapuntal babble that drifts to an inconclusive close as "Tongues of Fire II" is overtaken by the slowly pulsating calm of "Fulfillment and Rest." With harmonic ties clearly restored, the underlying D/E tonic is left turning back and forth on a solo cello, closing the long diurnal arc as the carnival colors fade.
Pentecost Music
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