n 1 a  :  the upper bony part of the nose  b  :  the curved part of a pair of glasses that rests upon this part of the nose  2 a  :  PONS  b  :  a strand of protoplasm extending between two cells  c  :  a partial denture held in place by anchorage to adjacent teeth  d  :  a connection (as an atom or group of atoms) that joins two different parts of a molecule (as opposite sides of a ring)  e  :  an area of physical continuity between two chromatids persisting during the later phases of mitosis and constituting a possible source of somatic genetic change .
 
 
 
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