Result from Foreign Dictionaries (2 entries found)
From The Collaborative International Dictionary of English v.0.48 [gcide]:
QC \Q.C.\ (k[=u]`s[=e]"), n.
Quality control. [abbrev.]
[PJC]
From V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2013) [vera]:
QC
Quad Core (CPU)