demi-

from The Collaborative International Dictionary of English v.0.48
Demi- \Dem"i-\ [F. demi-, fr. L. dimidius half; di- = dis- +
   medius middle. See {Medium}, and cf. {Demy}, {Dimidiate}.]
   A prefix, signifying half.
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from The Collaborative International Dictionary of English v.0.48
Demi \De*mi"\, n.
   See {Demy}, n.
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from The Collaborative International Dictionary of English v.0.48
Demy \De*my"\, n.; pl. {Demies}. [See {Demi-}.]
   1. A printing and a writing paper of particular sizes. See
      under {Paper}.
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   2. A half fellow at Magdalen College, Oxford. [Written also
      {demi}.]
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            He was elected into Magdalen College as a demy; a
            term by which that society denominates those
            elsewhere called "scholars," young men who partake
            of the founder's benefaction, and succeed in their
            order to vacant fellowships.          --Johnson.
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