(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.

Alternative form of open-source

(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.

A source from which useful energy can be extracted or recovered either directly or by means of a conversion or transformation process (e.g. solid fuels, liquid fuels, solar energy, biomass, etc.)

(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.

plural of power source

A source of power such as a generator or mains outlet.

A measured amount of radioisotope sealed within a protective container.

(linguistics, translation studies) The language from which a translation is done. / (computing) The language of the source code to be compiled.

Alternative spelling of closed-source