The Collaborative International Dictionary of English v.0.48:

Attendant \At*tend"ant\, a. [F. attendant, p. pr. of attendre.
   See Attend, v. t.]
   1. Being present, or in the train; accompanying; in waiting.
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            From the attendant flotilla rang notes triumph.
                                                  --Sir W.
                                                  Scott.
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            Cherub and Seraph . . . attendant on their Lord.
                                                  --Milton.
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   2. Accompanying, connected with, or immediately following, as
      consequential; consequent; as, intemperance with all its
      attendant evils.
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            The natural melancholy attendant upon his situation
            added to the gloom of the owner of the mansion.
                                                  --Sir W.
                                                  Scott.
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   3. (Law) Depending on, or owing duty or service to; as, the
      widow attendant to the heir. --Cowell.
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   Attendant keys (Mus.), the keys or scales most nearly
      related to, or having most in common with, the principal
      key; those, namely, of its fifth above, or dominant, its
      fifth below (fourth above), or subdominant, and its
      relative minor or major.
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The Collaborative International Dictionary of English v.0.48:

Attendant \At*tend"ant\, n.
   1. One who attends or accompanies in any character whatever,
      as a friend, companion, servant, agent, or suitor. "A
      train of attendants." --Hallam.
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   2. One who is present and takes part in the proceedings; as,
      an attendant at a meeting.
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   3. That which accompanies; a concomitant.
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            [A] sense of fame, the attendant of noble spirits.
                                                  --Pope.
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   4. (Law) One who owes duty or service to, or depends on,
      another. --Cowell.
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WordNet (r) 3.0 (2006):

attendant
    adj 1: being present (at meeting or event etc.) "attendant
           members of the congreation"
    2: following or accompanying as a consequence; "an excessive
       growth of bureaucracy, with attendant problems"; "snags
       incidental to the changeover in management"; "attendant
       circumstances"; "the period of tension and consequent need
       for military preparedness"; "the ensuant response to his
       appeal"; "the resultant savings were considerable" [syn:
       attendant, consequent, accompanying, concomitant,
       incidental, ensuant, resultant, sequent]
    n 1: someone who waits on or tends to or attends to the needs of
         another [syn: attendant, attender, tender]
    2: 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]
    3: an event or situation that happens at the same time as or in
       connection with another [syn: accompaniment, concomitant,
       attendant, co-occurrence]