a style of jazz piano music, developed by Scott Joplin around 1900, having a two-four rhythm base and a syncopated melody 
WordReference Random House Learner's Dictionary of American English © 2025
rag•time /ˈrægˌtaɪm/USA pronunciation  
n. [uncountable]
WordReference Random House Unabridged Dictionary of American English © 2025- Music and Danceinstrumental jazz marked by syncopated melody and a steadily accented beat in the bass.
 
rag•time 
(rag′tīm′),USA pronunciation n. [Music.]
 rag′time′y, adj. 
Rag•time (rag′tīm′),USA pronunciation n.
- Music and Dancerhythm in which the accompaniment is strict two-four time and the melody, with improvised embellishments, is in steady syncopation.
 - Music and Dancea style of American music having this rhythm, popular from about 1890 to 1915.
 
- probably rag(ged) + time 1895–1900
 
Rag•time (rag′tīm′),USA pronunciation n.
- Literaturea novel (1975) by E. L. Doctorow.
 
Collins Concise English Dictionary © HarperCollins Publishers::
'ragtime' also found in these entries (note: many are not synonyms or translations):
Jazz Age
 - Joplin
 - New Orleans style
 - honky-tonk
 - one-step
 - rag
 - ricky-tick
 - shimmy
 - skiffle
 - stride piano
 - turkey trot