ninth Meaning, Definition & Usage

  1. noun position nine in a countable series of things
    • going into the ninth they were a run ahead
  2. noun one part in nine equal parts
    one-ninth.
  3. adjective satellite coming next after the eighth and just before the tenth in position
    9th.

WordNet

Ninth adjective
Etymology
From Nine; cf. AS. nigo&edh;a.
Definitions
  1. Following the eight and preceding the tenth; coming after eight others.
  2. Constituting or being one of nine equal parts into which anything is divided.
Ninth noun
Definitions
  1. The quotient of one divided by nine; one of nine equal parts of a thing; the next after the eighth.
  2. (Mus.) (a) An interval containing an octave and a second. (b) A chord of the dominant seventh with the ninth added.

Webster 1913