(noun, verb)


1. the place where something begins, where it springs into being

- Pittsburgh is the source of the Ohio River

Similar word(s): beginning, origin, root, rootage

Definition categories: location, point

2. a document (or organization) from which information is obtained

- the reporter had two sources for the story

Definition categories: communication, document, papers

3. anything that provides inspiration for later work

Similar word(s): germ, seed

Definition categories: thought, inspiration

4. a facility where something is available

Definition categories: man–made, facility, installation

5. a person who supplies information

Similar word(s): informant

Definition categories: person, communicator

6. someone who originates or causes or initiates something

Similar word(s): author, generator

Definition categories: person, maker, shaper

7. (technology) a process by which energy or a substance enters a system

- a heat source

- a source of carbon dioxide

Definition categories: process, action, activity

8. anything (a person or animal or plant or substance) in which an infectious agent normally lives and multiplies

Similar word(s): reservoir

Definition categories: object, thing

9. a publication (or a passage from a publication) that is referred to

- he spent hours looking for the source of that quotation

Similar word(s): reference

Definition categories: communication, publication

Sentences with source as a noun:

- The accused refused to reveal the source of the illegal drugs she was selling.

- The main sources of the Euphrates River are the Karasu and Murat Rivers.


1. get (a product) from another country or business

- She sourced a supply of carpet

Definition categories: possession, obtain

2. specify the origin of

- The writer carefully sourced her report

Definition categories: cognition, document