In chemistry|lang=en terms the difference between isomeric and leucophyll
is that
isomeric is (chemistry) exhibiting isomerism while
leucophyll is (chemistry) a colourless substance, isomeric with chlorophyll, contained in parts of plants capable of becoming green.
As an adjective isomeric
is (chemistry|physics) being an isomer.
As a noun leucophyll is
(chemistry) a colourless substance, isomeric with chlorophyll, contained in parts of plants capable of becoming green.