adj. & n. 1 next after fourth. 2 any of five equal parts of a thing. 3 Mus. interval or chord spanning five consecutive notes in a diatonic scale (e.g. C to G). c fifthly adv. [Old English: related to rive]
adj. & n. 1 next after fourth. 2 any of five equal parts of a thing. 3 Mus. interval or chord spanning five consecutive notes in a diatonic scale (e.g. C to G). c fifthly adv. [Old English: related to rive]
