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.
In music theory, a major chord (Play (helpÂ·info)) is a chord that has a root, a major third, and a perfect fifth. When a chord has these three notes alone, it is called a major triad. Major triads with additional notes, such as the major seventh chord, are also called major chords.