noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The use of open source software development best practices and the establishment of an open source-like culture within organizations, for the development of software that is proprietary or not open source. uncountable
2. 2
   Alternative letter-case form of InnerSource. alt-of, uncountable
3. 3
   Alternative letter-case form of InnerSource. alt-of, uncountable

Etymology

From inner + source; coined by Irish-American author and publisher Tim O'Reilly in 2000.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.