Source : Webster's Revised Unabridged Dictionary (1913)

Minyan \Min*yan"\, n. (Jewish Relig.)
   A quorum, or number necessary, for conducting public worship.

Source : WordNet®

minyan
     n : the quorum required by Jewish law to be present for public
         worship (at least ten males over thirteen years of age)
     [also: {minyanim} (pl)]