Entry 1 sense Webster, 1913 Lentando /(lā̇n*tän"dō̇; E. lĕn*tăn"dō̇)/ · Len·tan·do · IPA 01 a. Slackening; retarding. Same as Rallentando. 1. Slackening; retarding. Same as Rallentando.(Mus.) See: Rallentando