'Predecessor' definitions:

Definition of 'predecessor'

From: WordNet
noun
One who precedes you in time (as in holding a position or office)
noun
Something that precedes and indicates the approach of something or someone [syn: harbinger, forerunner, predecessor, herald, precursor]

Definition of 'Predecessor'

From: GCIDE
  • Predecessor \Pred`e*ces"sor\ (?; 277), n. [L. praedecessor; prae before + decessor one who withdraws from the province he has governed, a retiring officer (with reference to his successor), a predecessor, fr. decedere: cf. F. pr['e]d['e]cesseur. See Decease.] One who precedes; one who has preceded another in any state, position, office, etc.; one whom another follows or comes after, in any office or position. [1913 Webster]
  • A prince who was as watchful as his predecessor had been over the interests of the state. --Prescott. [1913 Webster]

Synonyms of 'predecessor'

From: Moby Thesaurus