Category: M

Sebaceous glands around the nipple which become more marked in pregnancy [After William Fetherstone Montgomery (1797-1859), Dublin gynaecologist].  

A diarrhoea which affects people travelling in foreign countries, often due to eating unwashed fruit or drinking water which has not been boiled (informal).  

A former term for a fetus or infant with severe developmental malformations, usually not able to live. Medical term for a grossly malformed, usually non-viable, fetus.  

Having a valency of one. Having a single electron available to chemically combine with another substance; common monovalent cations (carry a positive electrical charge) m the body include sodium (Na+) and potassium (K+). Having a single electron available in the outermost orbital for chemical bonding.  

Referring to a nervous pathway with only one synapse monovalent.  

A condition in which a person has a chromosome missing from one or more pairs. Chromosomal abnormality characterized by the absence of one chromosome from the normal diploid number for the species. A condition in which there is one chromosome missing from the normal (diploid) set. Condition of having only one of a pair of…

A neuritis which affects one nerve. Disease affecting a single peripheral nerve. Entrapment of the nerve or interference with its blood supply are the commonest causes. Mononeuritis multiplex is the separate involvement of two or more nerves. Peripheral nerve damage affecting several distinct nerves in different regions of the body. Mononeuritis multiplex is found in…

A congenital condition in which only one finger or toe is present on the hand or foot. The congenital absence of all but one digit on a hand or foot. Condition, usually congenital, of having only one digit on a hand or foot. Also called monodactyly or monodactylia. A birth defect characterized by having only…

A condition in which there is an unusually high number of monocytes in the blood. Symptoms include sore throat, swelling of the lymph nodes and fever. It is probably caused by the Epstein-Barr virus. Increase in the number of monocytes in the blood, occurring in some infections and in monocytic leukemia. An increase in the…

The ability to see with one eye only, so that the sense of distance is impaired.