Wordnet 3.0
NOUN (1)
1. 
 a person who is present and participates in a meeting; 
- Example: "he was a regular attender at department meetings"- Example: "the gathering satisfied both organizers and attendees"[syn: attendant, attender, attendee, meeter]
WordNet (r) 3.0 (2006):
attendee
    n 1: a person who is present and participates in a meeting; "he
         was a regular attender at department meetings"; "the
         gathering satisfied both organizers and attendees" [syn:
         attendant, attender, attendee, meeter]