A · B · C · D · E · F · G · H · I · J · K · L · M · N · O · P · Q · R · S · T · U · V · W · X · Y · Z
1. expression standing for "men, money and materials" and which is also written as "3 M's" or "MMM."
2. a symbol has three M's, mass, meaning and mobility. (COHA, p. 91)
