1) a person far below the range of normal height. Being extremely
short but otherwise in proper proportion is not a medical diagnosis; the term "midget" is not a medical one. However, the broader term "
short stature" (<5th percentile or under about
5'
5" for men/5' for women) is used, but like "midget" is not a medical diagnosis unless it is due to hormonal problems.
2) (slang) a man 5'5" or shorter.