| hyperchromic | Synonym: hyperchromatic. 2. Denoting increased light absorption. (05 Mar 2000) |
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| hyperchromic anaemia | <haematology> A type of anaemia which results when the body lacks sufficient vitamin B and the resulting red blood cells are thicker than normal, appearing more deeply coloured. Origin: Gr. Haima = blood (11 Jan 1998) |
| hyperchromic effect | An increase in absorptivity (or extinction) at a particular wavelength of light by a solution or substance due to structural changes in a molecule. (05 Mar 2000) |
| hyperchromicity | <chemistry> An increase in the optical density of a solution with nucleic acids in it such that it is able to absorb more ultraviolet radiation, which occurs when the double-stranded nucleic acid molecules denature into single-stranded molecules. (11 Jan 1998) |