The Collaborative International Dictionary of English v.0.48:
Ansa \An"sa\ ([a^]n"s[.a]), n.; pl. Ans[ae] ([a^]n"s[=ae]).
[L., a handle.] (Astron.)
A name given to either of the projecting ends of Saturn's
V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):
Advanced Networked Systems Architecture (ISA)
The Free On-line Dictionary of Computing (30 December 2018):
Advanced Network Systems Architecture
(ANSA) A "software bus" based on a model for
distributed systems developed as an ESPRIT project.