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(mĕn-tā′shŭn) Mental activity.

Mentha piperita

(ment′ă pĭ-pĕ-rē′tă) SEE: peppermint.


(mĕn′thŏl) C10H20O; an alcohol obtained from oil of peppermint or other mint oils. Menthol may be prepared synthetically. It occurs in crystalline form. When applied to the skin in a 0.25% to 2% solution, it is an antipruritic.


(mĕn′tŏn) [L. mentum, chin] A craniometric landmark, being the lowest point of the mandibular symphysis seen in a lateral radiograph. It is similar to, but not necessarily the same as, gnathion, which is the lowest point of the mandible in the midline as palpated in the living.


(mĕn′tō-plăs-tē) Cosmetic surgery designed to enhance the appearance of the chin.


(men′tor″, ′tŏr) [Fr. Mentor, Odysseus' adviser and Telemachus' guardian in Homer's Odyssey] A trusted advisor, educator, guide, guardian, and tutor.


(ment′ŭm, ment′ă) pl. menta [L. mentum, chin (human or animal), beard] The chin.


acute myelomonocytic leukemia with abnormal eosinophils.


microsomal ethanol oxidizing system.


(mĕ-fĭt′ĭk) [L. mephiticus, mephitis, foul exhalation] Noxious, foul, as a poisonous odor.


Symbol for milliequivalent.


(mĕr-ăl′pē-ă) [Gr. meros, thigh, + algos, pain] Pain in the thigh.

m. paresthetica Pain and hyperesthesia on the outer femoral surface from lesion or disease of the lateral cutaneous nerve of the thigh. SYN: Bernhardt-Roth syndrome.


(mĕr-kăp′tăn) Any organic chemical that contains the —SH radical. It is formed when the oxygen of an alcohol is replaced by sulfur.

Merchant view

An x-ray study of the knee while it is in 30° of flexion, with the patellofemoral joint viewed tangentially. This radiographical view of the knee shows the position of the dorsal surface of the patella as it sits in the trochlear groove between the femoral condyles.


(mĕr-kū′rē-ăl) [L. mercurialis] 1. Pert. to mercury. 2. A substance containing mercury.


(mĕr-kū′rē-ăl-ĭzm) [L. mercurius, mercury, + Gr. -ismos, condition] Chronic poisoning by mercury. It is seen as a result of continuous administration of mercury or occurs in persons who work with the metal or inhale its vapors.

SYMPTOMS: Chronic mercury poisoning causes soreness of gums and loosening of teeth; increased salivation; tremor; and behavioral mood ...

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