irreducible

Impossible to reduce to a desired, simpler, or smaller form or amount.

Incapable of being reduced to a lower amount or degree; not to be diminished or degraded.

Incapable of being brought into a different state, condition, or form.

Incapable of being reduced to a desired form or condition by manipulation: as, an irreducible hernia or fracture.

Incapable of being reduced, or brought into a different state; incapable of restoration to its proper or normal condition.

Incapable of being reduced to a simpler form of expression.

a particular case in the solution of a cubic equation, in which the formula commonly employed contains an imaginary quantity, and therefore fails in its application.

Not able to be reduced or lessened.

Not able to be brought to a simpler or reduced form.

Unable to be factorized into polynomials of lower degree, as (x^2 + 1).