Definition of isophane:
(n) :
(countable, meteorology) Synonym of isophene (“a line drawn on a map through points where a given seasonal biological event occurs on the same date”).
(adj) :
(of a solution containing protamine and insulin) Being of a certain ratio of protamine to insulin.
(n) :
(uncountable, medicine) Ellipsis of isophane insulin: one of various synthetic forms of insulin used to treat diabetes.