atypical lipoma n.
A benign lipoma occurring primarily in older men on the posterior neck, shoulders, and back, and containing multinucleated giant cells. Also called pleomorphic lipoma.
- Atypical measles
atypical measles atypical measles n. A severe form of measles caused by natural infection with the measles virus in persons whose immunity by vaccination is diminished; it is characterized by high fever, atypical rash, and pneumonia.
- Atypical pneumonia
atypical pneumonia atypical pneumonia n. See primary atypical pneumonia.
- Atypical verrucous endocarditis
atypical verrucous endocarditis atypical verrucous endocarditis n. See Libman-Sacks endocarditis.
not ; not conforming to the type; irregular; abnormal: atypical behavior; a flower atypical of the species. adjective not typical; deviating from or not conforming to type adj. 1847, from a- (2) “not” + typical. Related: Atypically. atypical a·typ·i·cal (ā-tĭp’ĭ-kəl) adj. Not corresponding to the normal form or type; not typical. a·typ’i·cal·ly adv.