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[grey-duh s] /ˈgreɪ dəs/
noun, plural graduses. Music.
a work consisting wholly or in part of exercises of increasing difficulty.
< Latin: grade, step


[grey-duh s] /ˈgreɪ dəs/
noun, plural graduses.
a dictionary of prosody, especially one that gives word quantities and poetic phrases and that is intended to aid students in the writing of Latin and Greek verse.
1755-65; after Gradus ad Parnassum (a step to Parnassus), Latin title of a dictionary of prosody much used in English public schools during the 18th and 19th centuries Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for gradus


noun (pl) -duses
a book of études or other musical exercises arranged in order of increasing difficulty
(prosody) a dictionary or textbook of prosody for use in writing Latin or Greek verse
Word Origin
C18: shortened from Latin Gradus ad Parnassum a step towards Parnassus, a dictionary of prosody used in the 18th and 19th centuries
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Article for gradus

a dictionary of Greek or Latin prosody and poetic phrases used as an aid in the writing of verse in Greek or Latin. The term is derived from the Gradus ad Parnassum ("A Step to Parnassus"), a 17th-century prosody dictionary long used in British schools.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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