Orthochromasy is an antonym of metachromasia.
As a noun metachromasia is
a characteristic change in the colour of staining carried out in biological tissues, exhibited by certain aniline dyes when they bind to particular substances present in these tissues, called chromotropes.
orthochromasy
Not English
Orthochromasy has no English definition. It may be misspelled.
metachromasia
English
Noun
(-)
A characteristic change in the colour of staining carried out in biological tissues, exhibited by certain aniline dyes when they bind to particular substances present in these tissues, called chromotropes.
Synonyms
* metachromasy
Antonyms
* orthochromasy