2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Isometric  \I`so*met"ric\,  Isometrical  \I`so*met"ric*al\,  a. 
  [Iso-  +  Gr  ?  measure.] 
  1.  Pertaining  to  or  characterized  by  equality  of  measure. 
 
  2.  (Crystallog.)  Noting,  or  conforming  to  that  system  of 
  crystallization  in  which  the  three  axes  are  of  equal 
  length  and  at  right  angles  to  each  other  monometric; 
  regular;  cubic.  Cf  {Crystallization}. 
 
  {Isometric  lines}  (Thermodynamics),  lines  representing  in  a 
  diagram  the  relations  of  pressure  and  temperature  in  a 
  gas,  when  the  volume  remains  constant. 
 
  {Isometrical  perspective}.  See  under  {Perspective}. 
 
  {Isometrical  projection},  a  species  of  orthographic 
  projection,  in  which  but  a  single  plane  of  projection  is 
  used  It  is  so  named  from  the  fact  that  the  projections  of 
  three  equal  lines,  parallel  respectively  to  three 
  rectangular  axes,  are  equal  to  one  another.  This  kind  of 
  projection  is  principally  used  in  delineating  buildings  or 
  machinery,  in  which  the  principal  lines  are  parallel  to 
  three  rectangular  axes,  and  the  principal  planes  are 
  parallel  to  three  rectangular  planes  passing  through  the 
  three  axes. 
 
  From  WordNet  r  1.6  [wn]: 
 
  isometrical 
  adj  :  having  equal  dimensions  or  measurements  [syn:  {isometric}] 

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