INCURABILITY
Source: 566, 567
incurability|incurableness. Incurability, or Incurableness, n. an impossibility of cure
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In‐cur′a‐bil″i‐ty (?), n. [[Cf. F. incurabilité incurability, LL. incurabilitas negligence.]] The state of being incurable; irremediableness. Harvey.