Webster's English Dictionary

Enter the word to look up:

endogenous

en.dog.e.nous \en-'da:j-*-n*s\ aj 1a: growing from or on the inside : 
   developing within the cell wall  1b: originating within the body  2: 
   constituting or relating to metabolism of the nitrogenous constituents  of 
   cells and tissues - en.dog.e.nous.ly av