Medical Dictionary
head
noun \ˈhed\
Medical Definition of HEAD
1
: the division of the human body that contains the brain, the eyes, the ears, the nose, and the mouth; also : the corresponding anterior division of the body of various animals including all vertebrates, most arthropods, and many mollusks and worms
2
: headache
3
: a projection or extremity especially of an anatomical part: as a : the rounded proximal end of a long bone (as the humerus) b : the end of a muscle nearest the origin c : the anterior end of an invertebrate : scolex
4
: the part of a boil, pimple, or abscess at which it is likely to break
5
: the end of a lipid molecule that consists of a polar group and is regarded as being opposite to the tail
—head adjective
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