/ron"doh, ron doh"/ , n. , pl. rondeaux /-dohz, -dohz"/ .
1. Pros. a short poem of fixed form, consisting of 13 or 10 lines on two rhymes and having the opening words or phrase used in two places as an unrhymed refrain.
2. a 13th-century monophonic song form consisting of two phrases, each repeated several times, and occurring in the 14th and 15th centuries in polyphonic settings.
3. a 17th-century musical form consisting of a refrain alternating with contrasting couplets, developing in the 18th century into the sonata-rondo form.
[ 1515-25; ]