Definition of incompatibles:
(adj) :
Of two things: that cannot coexist; not congruous because of differences; unable to function together due to dissimilarities.
(adj) :
(chemistry) Incapable of being together without mutual reaction or decomposition, as certain medicines.
(n) :
(medicine, chemistry, chiefly in the plural) An incompatible substance; one of a group of things that cannot be placed or used together because of a change of chemical composition or opposing medicinal qualities.
(n) :
(philosophy) A consequent of a contrary.