Ir′re‐solv″a‐ble (?), a. [Pref. ir- not + resolvable. Cf. Irresoluble.] 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.