[Please add individual mnemonics in it's own page under this category.]

Via Wikipedia:

A mnemonic device (pronounced /nəˈmɒnɪk/) is a memory aid. Mnemonics are often verbal, something such as a very short poem or a special word used to help a person remember something, particularly lists. Mnemonics rely not only on repetition to remember facts, but also on associations between easy-to-remember constructs and lists of data, based on the principle that the human mind much more easily remembers insignificant data attached to spatial, personal, or otherwise meaningful information than that occurring in meaningless sequences. The sequences must make sense though; if a random mnemonic is made up, it is not necessarily a memory aid.

Sources of Mnemonics:

• Mnemonics from Clinical Cases
• Medical Mnemonics by Keyword via Medical Mnemonics.org