/pres"toh/ , adv., adj., n., pl. prestos .
adv.
1. quickly, rapidly, or immediately.
2. at a rapid tempo (used as a musical direction).
adj.
3. quick or rapid.
4. executed at a rapid tempo (used as a musical direction).
n.
5. Music. a movement or piece in quick tempo.
[ 1590-1600; praestus (adj.) ready, L praesto (adv.) at hand ]