About | Help  
  
 
WebsterComputerMath
 
ABCDEFGHIJKLMNOPQRSTUVWXYZ
 
PaPbPcPdPePfPgPhPiPjPkPlPmPnPoPpPqPrPsPtPuPvPwPxPyPz
 

PARFOCAL

PARFOCAL - (a.) With the lower focal points all in the same plane; -- said of sets of eyepieces so mounted that they may be interchanged without varying the focus of the instrument (as a microscope or telescope) with which they are used.