1 Retrieved October 19 2015 from http://www.acronymfinder.com/Radiology-Information-System%2fPicture-Archiving-and-Communication-System-(RIS%2fPACS).html. 2  APA style: RIS/PACS. (n.d.) Acronym Finder. ( 3 2015).
In music, a diminished triad ( Play ), also known as the minor flatted fifth (mâ­5), is a triad consisting of three minor thirds above the root â if built on C, a diminished triad would have a C, an Eâ­ and a Gâ­.
Augmented/diminished intervals. Only valid with chords for the 5th. Augmented means one half step higher, diminished means one half step lower then the perfect fifth. Minor 6th and augmented 5th are the same notes. When building the basic chords we will see what these notes are.