Source : Webster's Revised Unabridged Dictionary (1913)

Size \Size\, v. t. [imp. & p. p. {Sized}; p. pr. & vb. n.
   {Sizing}.]
   To cover with size; to prepare with size.

Sizing \Siz"ing\, n.
   1. Act of covering or treating with size.

   2. A weak glue used in various trades; size.

Sizing \Siz"ing\, n.
   1. The act of sorting with respect to size.

   2. The act of bringing anything to a certain size.

   3. (Univ. of Cambridge, Eng.) Food and drink ordered from the
      buttery by a student.

Source : WordNet®

sizing
     n : any glutinous material used to fill pores in surfaces or to
         stiffen fabrics; "size gives body to a fabric" [syn: {size}]