Main Entry: ninth

Pronunciation: \ˈnīn(t)th\

Function: noun

Inflected Form(s): plural ninths \ˈnīn(t)s, ˈnīn(t)ths\

Date: 13th century

1 — see number table
2 a : a musical interval embracing an octave and a second b : the tone at this interval c : a chord containing a ninth

— ninth adjective or adverb