Alternative spelling of closed-source

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.)

(astronomy) Any astronomical object that emits radio waves.

(software, slang, derogatory) open source computer software that is buggy, unstable, or lacking features.

superlative form of sour: most sour

comparative form of sour: more sour

(rare) That which makes something sour.

Third-person singular simple present indicative form of sourd

Alternative form of sourd

Within a conceptual metaphor, the conceptual domain from which metaphorical expressions are drawn.