"A heat source", "A source of carbon dioxide"Category: General
"The reporter had two sources for the story"Category: General
3.Definition: a facility where something is availableCategory: Objects
"He carried an armful of references back to his desk", "He spent hours looking for the source of that quotation"
Related Noun(s):referenceCategory: General
Related Noun(s):reservoirCategory: Objects
"The Italian beginning of the Renaissance", "Jupiter was the origin of the radiation", "Pittsburgh is the source of the Ohio River", "Communism's Russian root"