Late 16th century; earliest use found in Richard Stanyhurst (1547–1618), literary scholar and translator. From rhythm + -ing mid 17th century; earliest use found in Thomas Fuller (1607/8–1661), Church of England clergyman. From rhythm + -ing.
Definition of rhythming in US English:
rhythming
nounˈrɪðmɪŋ
rare
Rhyming.
adjectiveˈrɪðmɪŋ
Rhyming.
Origin
Late 16th century; earliest use found in Richard Stanyhurst (1547–1618), literary scholar and translator. From rhythm + -ing<br>mid 17th century; earliest use found in Thomas Fuller (1607/8–1661), Church of England clergyman. From rhythm + -ing.