simple past tense and past participle of discontinue

Permanently no longer available or in production.

having breaks or interruptions; intermittent / (mathematics) having at least one discontinuity

A lack of continuity, regularity or sequence; a break or gap. / (mathematics) A point in the range of a function at which it is undefined or discontinuous.

plural of discontinuation

One who discontinues, or breaks off or away from; an absentee.

(linguistics) Indicating discontinuation.

plural of discontinuer

Capable of being discontinued.

(geology) The boundary between the Earth’s crust and mantle. / (astrogeology, planetology) A similar structure on other bodies, that separates crust from mantle.