Intermediate

междинен

meždinen

(being between two extremes, or in the middle of a range)

среден

sreden

(being between two extremes, or in the middle of a range)

междинен продукт

meždinen produkt

(any substance formed as part of a series of chemical reactions that is not the end-product)

посредник

posrednik

(an intermediary)

посреднича

posredniča

(to mediate, to be an intermediate)