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MX missile any of a system of U.S. intercontinental ballistic missiles, each having ten warheads; MX.
My. abbreviation of "May," the fifth month of the Gregorian calendar year, having thirty-one days.
my of, relating to, or belonging to the speaker (a possessive form of I). [2 definitions]
Myanmar a Southeast Asian country between India and Thailand; formerly Burma.
myasthenia abnormal muscular weakness.
myasthenia gravis an autoimmune disease that results in chronic muscle weakening.
mycelium the undifferentiated, nonreproducing part of a fungus, composed of a mass of branching filaments.
Mycenae a major center of ancient Greek civilization located in the northeastern Peloponnesus.
Mycenaean of or pertaining to Mycenae, a major center of ancient Greek civilization located in the northeastern Peloponnesus. [2 definitions]
Mycene in Greek mythology, the nymph for whom the ancient center of civilization, Mycenae, was named. [2 definitions]
-mycete fungus.
-mycin substance obtained from a fungus.
myco- fungus.
mycology the branch of botany devoted to the study of fungi. [2 definitions]
mycosis any disease in humans or animals that is caused by a fungus.
mydriasis excessive or prolonged dilation of the eye's pupil, as from illness or the use of a drug. (Cf. miosis.)
myelin soft, white, fatty matter that sheathes certain nerve fibers.
myelitis inflammation of the spinal cord. [2 definitions]
myelo- spinal cord; marrow.
myelogram an x-ray photograph of the spinal cord that is taken after a radiopaque substance has been administered.
myeloma a malignant tumor affecting bone marrow.