'Propagator' definitions:

Definition of 'propagator'

From: WordNet
noun
Someone who propagates plants (as under glass)
noun
Someone who spreads the news [syn: propagator, disseminator]

Definition of 'Propagator'

From: GCIDE
  • Propagator \Prop"a*ga`tor\, n. [L.: cf. F. propagateur.] One who propagates; one who continues or multiplies. [1913 Webster]