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Incapable of being turned or changed. An indurate and invertible conscience. Cranmer.

Incapable of being conquered, overcome, or subdued; unconquerable; insuperable; as, an invincible army, or obstacle. Lead forth to battle these my sons Invincible. Milton. -- In*vin"ci*ble*ness, n. -- In*vin"ci*bly, adv.

Incapable of being seen; not perceptible by vision; not visible. To us invisible, or dimly seen In these thy lowest works. Milton. Invisible bird (Zoöl.), a small, shy singing bird (Myadestes sibilons), of St. Vincent Islands. -- Invisible green, a very dark shade of green, approaching to black, and liable to be mista…

Incapable of being wounded, or of receiving injury. Neither vainly hope To be invulnerable in those bright arms. Milton.

Incapable of being rebutted. Coleridge.

Not receiving; incapable of receiving.

Incapable of being reclaimed. Addison. -- Ir`re*claim"a*bly, ad

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

Incapable of being reformed; incorrigible. Joseph Cook.

Incapable of being refuted or disproved; indisputable. -- Ir`re*fut"a*ble*ness, n. -- Ir`re*fut"a*bly, adv.

Incapable of being justly reproved; irreproachable; blameless; upright. -- Ir`re*prov"a*ble*ness, n. -- Ir`re*prov"a*bly, adv.

Incapable of being dissolved or resolved into parts; insoluble. Boyle.

Incapable of being resolved; not separable into component parts. Irresolvable nebulæ (Astron.), nebulæ of a cloudlike appearance, which have not yet been resolved by the telescope into stars. Sir W. Herschel.

Incapable of being resuscitated or revived. -- Ir`re*sus"ci*ta*bly, adv.

Incapable of being retraced; not retraceable.

Incapable of being revealed. -- Ir`re*veal"a*bly, adv.

Incapable of being reversed or turned about or back; incapable of being made to run backward; as, an irreversible engine.

Incapable of being recalled or revoked; unchangeable; irreversible; unalterable; as, an irrevocable promise or decree; irrevocable fate. Firm and irrevocable is my doom. Shak. -- Ir*rev"o*ca*ble*ness, n. -- Ir*rev"o*ca*bly, adv.

otornis Mantelli) formerly inhabiting New Zealand, but now supposed to be extinct. It was incapable of flight. See Notornis.

the matter of which anything is formed; composing substance; material. The etherial mold, Incapable of stain. Milton. Nature formed me of her softest mold. Addison.