• Webster's Revised Unabridged Dictionary
    • v. t Overmount To mount over; to go higher than; to rise above.
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Century Dictionary and Cyclopedia
    • overmount To surmount; go higher than.
    • n overmount In framing or mounting pictures to be covered with glass, a piece of stiff paper or board cut to correspond with the margin of the engraving or picture to be mounted, and laid upon the picture to separate its surface from the glass in the frame; a mat.
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Chambers's Twentieth Century Dictionary
    • v.t Overmount ō-vėr-mownt′ to surmount: to go higher than
    • n Overmount a piece of cardboard cut in proper shape, to prevent the glass of the frame from lying too closely upon an engraving or a picture
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Webster's Revised Unabridged Dictionary
Cf. Surmount