Is there an easy definition of a dotted rhythm in music?

Yes, the idea of a dotted beat in music is really simple. A rhythmic pattern known as a "dotted rhythm" consists of one note that is half the length of the preceding note.

An eighth note, for instance, would come after a dotted quarter note. The dotted quarter, which is the first note, receives 3/4 of the beat, but the eighth, which is the second note, receives 1/4 of the beat. This produces a unique rhythmic feel that is frequently employed in a variety of musical genres.

Dotted rhythms give the beat more intensity and accentuation. They are a typical technique used in musical compositions to add syncopation and rhythmic interest.