RhymeZone: intercurrent definitions

Definitions of intercurrent:

adjective: Running between or among; intervening.
adjective: (medicine, of a disease or condition) Simultaneous; occurring at the same time as, or during the period of, another condition.
adjective: (medicine, of a disease or condition) Not belonging to any particular season.
noun: Something intervening.

(Definitions from Wiktionary)