'cancerous' definitions:

Definition of 'cancerous'

From: WordNet
adjective
Relating to or affected with cancer; "a cancerous growth"
adjective
Like a cancer; an evil that grows and spreads; "remorse was cancerous within him"; "pornography is cancerous to the moral development of our children"

Definition of 'cancerous'

From: GCIDE
  • cancerous \can"cer*ous\, a. [Cf. F. canc['e]reux] Like a cancer; having the qualities or virulence of a cancer; affected with cancer; as, a cancerous growth. "cancerous vices" --G. Eliot. [1913 Webster] -- {Can"cer*ous*ly}, adv. -- {Can"cer*ous*ness}, n. [1913 Webster]