Pneumonic

I found this on About.com:

http://physicaltherapy.about.com/od/humananatomy/p/RotatorCuff.htm

“The four muscles that form the rotator cuff are the supraspinatus, infraspinatus, teres minor, and subscapularis. Often the pneumonic S.I.T.S is used to help remember the muscles that make up the rotator cuff.”

Comment: Anybody who thinks mnemonic is spelled pneumonic ought to remember that mnemonic is named after the muse Mnemosyne. If pneumonic be a word, it must have something to do with breath or pneumonia.