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

occurrence \occur"rence\, n. cf. f. occurrence. see occur.
   1. a coming or happening; as, the occurence of a railway
      collision.
      1913 webster

            voyages detain the mind by the perpetual occurrence
            and expectation of something new.     --i. watts.
      1913 webster

   2. any event or incident; esp., one which happens without
      being designed or expected; as, an unusual occurrence, or
      the ordinary occurrences of life.
      1913 webster

            all the occurrence of my fortune.     --shak.
      1913 webster

   syn: see event.
        1913 webster
see also:
occur event 

[2] : WordNet (r) 2.0

occurrence
     n 1: an event that happens syn: happening, natural event
     2: an instance of something occurring; "a disease of frequent
        occurrence"; "the occurrence or presence of life on
        other planets"
see also:
happening natural event 

[3] : Moby Thesaurus II by Grady Ward, 1.0

92 moby thesaurus words for "occurrence":
   accessibility, actual presence, adventure, affair, apparition,
   appearance, appearing, arising, availability, avatar, being,
   being here, being there, chance, circumstance, coming,
   coming into being, coming-forth, condition, conjuncture,
   contingency, development, disclosure, emergence, emergency, ens,
   entity, epiphany, episode, esse, essence, event, eventuality,
   exigency, existence, experience, exposure, fact, forthcoming,
   frequency, go, hap, happening, happenstance, hereness, immanence,
   immediacy, incarnation, incidence, incident, indwellingness,
   inherence, instance, issuance, juncture, life, likelihood,
   manifestation, materiality, materialization, materializing, matter,
   matter of fact, occasion, opening, particular, pass, phenomenon,
   physical presence, presence, presentation, rate, reality,
   realization, revelation, rise, rising, showing, showing forth,
   situation, spiritual presence, state, subsistence, substantiality,
   theophany, thereness, thing, turn of events, ubiety, unfolding,
   unfoldment, whereness

Occurrence >> O Words
Occurrence, definition of term: Occurrence
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