maceration
- n softening due to soaking or steeping
- n extreme leanness (usually caused by starvation or disease)
macgregor
- n Scottish clan leader and outlaw who was the subject of a 1817 novel by Sir Walter Scott (1671-1734)
macguffin
- n (film) a plot element that catches the viewers' attention or drives the plot
mach
- n Austrian physicist and philosopher who introduced the Mach number and who founded logical positivism (1838-1916)