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.
To make a C diminished chord, you must lower E to Eb and G to Gb. Altogether, the chord is C Eb Gb. A diminished chord is written like this: Cdim or Co . Some of these chords have double flats. That means that you take the note that already is a flat, and make it lower by an additional semi-tone.