The Collaborative International Dictionary of English v.0.48:

Attendance \At*tend"ance\, n. [OE. attendance, OF. atendance,
   fr. atendre, F. attendre. See Attend, v. t.]
   1. Attention; regard; careful application. [Obs.]
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            Till I come, give attendance to reading. --1 Tim.
                                                  iv. 13.
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   2. The act of attending; state of being in waiting; service;
      ministry; the fact of being present; presence.
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            Constant attendance at church three times a day.
                                                  --Fielding.
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   3. Waiting for; expectation. [Obs.]
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            Languishing attendance and expectation of death.
                                                  --Hooker.
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   4. The persons attending; a retinue; attendants.
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            If your stray attendance by yet lodged. --Milton.
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WordNet (r) 3.0 (2006):

attendance
    n 1: the act of being present (at a meeting or event etc.) [syn:
         attendance, attending] [ant: nonattendance]
    2: the frequency with which a person is present; "a student's
       attendance is an important factor in her grade"
    3: the number of people that are present; "attendance was up by
       50 per cent"