(in a packet switching network) A technique whereby the sender of a packet can specify the route that a packet should take through the network.

The person, place, or thing from which something (information, goods, etc.) comes or is acquired.

(chiefly US) To obtain or procure: used especially of a business resource. / (transitive) To find information about (a quotation)'s source (from which it comes): to find a citation for.

(programming) Human-readable instructions in a programming language, to be transformed into machine instructions by a compiler, assembler or other translator, or to be carried out directly by an interpreter.

(software) Of or relating to a product which is licensed to permit modifications and redistribution of its source code, as per The Open Source Definition.

(transitive) To release the source code of.

(software) The practice of providing open-source code for a product. / (software) Open-source software in general. / (espionage) Information that is in the public domain and available to everybody.

Alternative form of open-source

A source of illumination.

(chiefly software) Whose constituent makeup, or source code, is not made publicly available.