Main Entry: path·way

Pronunciation: \ˈpath-ˌwā, ˈpäth-\

Function: noun

Date: 15th century

1 : path, course
2 : a line of communication over interconnecting neurons extending from one organ or center to another; also : a network of interconnecting neurons along which a nerve impulse travels
3 : the sequence of usually enzyme-catalyzed reactions by which one substance is converted into another <metabolic pathways>