Opportunistic

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  opportunistic \opportunistic\ adj.
     1. taking immediate advantage, often unethically, of any
        circumstance of possible benefit; practising opportunism.
        [WordNet sense 1]
  
     Syn: opportunist, timeserving.


          [WordNet 1.5]
  
     2. (Med.) Causing disease only when the immune system of the
        host has been weakened, or other damage to the host
        provides special opportunity for invasion; -- of
        microorganisms or infectious diseases; as, opportunistic
        pathogens may infect a burn site; AIDS predisposes a
        patient to opportunistic infection.
        [PJC]

From WordNet (r) 2.0 [wn]:

  opportunistic
       adj : taking immediate advantage, often unethically, of any
             circumstance of possible benefit [syn: {opportunist}, {timeserving}]