| adv. 1.  Music   In a very fast tempo, usually considered to be faster than allegro but slower than prestissimo. Used chiefly as a direction. 2.  So suddenly that magic seems involved; right away. n. pl.   pres·tos   Music  A passage or movement that is performed presto. [Italian, from Late Latin praestus, quick, from Latin praestō, at hand; see  ghes- in the Appendix of Indo-European roots.] presto adj. | 
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