adj 1  :  of, relating to, or characterized by hyperchromia  2  :  of, relating to, or characterized by increased absorption esp. of ultraviolet light < effect in DNA molecules subjected to heat>  hy*per*chro*mic*i*ty n pl  -ties  
 
 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2024.