| a combining form meaning “other,” used in the formation of compound words (allotrope) and in chemistry to denote the more stable of two geometric isomers. Also (except in chemistry), especially before a vowel, all-. |
al·le·gro  (ə-lěg'rō, ə-lā'grō)  adv. & adj. Abbr. allo In a quick, lively tempo, usually considered to be faster than allegretto but slower than presto. Used chiefly as a direction. n. pl. al·le·gros An allegro passage or movement. [Italian, from Latin alacer, lively.] |
| allo abbr. allegro |
allo- or all-
pref.
Other; different: allotransplantation.
Isomeric: allomorphism.
| allo allegro |
