(education, special education) Initialism of mentally retarded.

Clipping of MRI. / (pharmacology, medicine) Initialism of modified release. / (cardiology) Initialism of mitral regurgitation. / (biochemistry) Initialism of mineralocorticoid receptor.

(US, Canada) Abbreviation of March (month).

(US, Canada) Abbreviation of mister. A title used before the surname in theory, though not generally in practice, above some undefined social level, too old to be addressed as “Master”, not a knight or of some higher rank, and, in Britain though not in the United States, not entitled to be addressed as “Dr.”.

A personification of the Japanese housewife speculators, who are strong enough to affect international markets, especially foreign exchange markets.

An older woman who seduces a younger man.

Of a woman: to seduce (a younger man).

(Britain) Any ordinary woman, especially an older woman.

plural of Mrs. Robinson

simple past tense and past participle of Mrs. Robinson