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menstruation the usu. periodic process of discharging blood, mucus, and dead cells from the mammalian uterus when the egg is not fertilized. [2 definitions]
mensurable subject to measurement; measurable.
mensural of or relating to measure. [2 definitions]
mensuration the act, process, or method of measuring. [2 definitions]
-ment action; process. [3 definitions]
mental of or pertaining to the operation of the mind. [4 definitions]
mental age an individual's mental ability, measured in terms of the chronological age at which an average person would attain that level of intelligence.
mental health the condition, or degree of health, of one's mind and emotions. [3 definitions]
mental hospital an institution where people with mental illnesses are cared for, given therapy and medical treatment, and sometimes permanently housed, more commonly referred to now as "psychiatric hospital."
mental illness a class of illness that primarily afflicts the mind, thought processes, and emotions rather than the physical body. [3 definitions]
mentality mental power and ability. [2 definitions]
mentally with the mind; in the mind; intellectually. [2 definitions]
mental math mathematical calculations done by thinking alone.
mental retardation the lack of one or more mental functions since birth, resulting in below-normal intelligence and inability to function adequately, caused by brain damage, disease, or congenital factors; mental deficiency.
mentation the workings of the mind; mental activity.
menthol an alcohol derived from peppermint oils or produced synthetically, used in scents and flavorings, in cigarettes, and esp. in medications for its soothing effect on irritated mucous membranes.
mentholated containing or treated with menthol.
mention to say or to bring up the subject of (something), usually in just a few words or in passing. [3 definitions]
mentionable combined form of mention.
mentor a guide and counselor, esp. one who plays a significant role in a person's intellectual, professional, or personal development. [2 definitions]
menu a list of foods available at a restaurant, often accompanied by brief descriptions and prices. [3 definitions]