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metaphase in biology, the stage in mitosis and meiosis in which the duplicated chromosomes of the dividing cell line up along the equatorial plane of the spindle.
metaphor a figure of speech in which a word or phrase is used to describe one thing in terms of another in a nonliteral way, such as "drowning in work".
metaphysical of, pertaining to, or in the nature of metaphysics. [3 definitions]
metaphysics (used with a sing. verb) the branch of philosophy that deals with first principles and the ultimate nature of reality and existence. [2 definitions]
metastable of or pertaining to a physical or chemical state that is stable to minor disturbances but will be disrupted by a major disturbance.
metastasis the transfer of disease or malignant cells from one part of the body to another through the blood, lymph, or membranes, or the resulting condition, as in tuberculosis or cancerous tumors. [2 definitions]
metastasize to spread to other parts of the body, as cells of a malignant tumor.
metatarsal of or relating to the metatarsus. [2 definitions]
metatarsus the instep, or bones of the instep, of the human foot, or a corresponding part in the hind foot of four-legged animals.
metathesis the accidental or intentional interchange of letters, syllables, or sounds within one word or among words.
metazoan any of the animals whose bodies are composed of differentiated cells. (Cf. protozoan.) [2 definitions]
mete1 to apportion or distribute (usu. fol. by "out").
mete2 a boundary or limit, or the marker thereof.
metempsychosis the transmigration of the soul of a dead person or animal into the living body of another.
metencephalon the anterior part of the embryonic brain that develops into the cerebellum and the pons.
meteor the bright streak or flash seen in the sky made by generally small-sized space debris passing through Earth's atmosphere and burning up due to high friction, often referred to as a shooting star.
meteoric of, pertaining to, or consisting of meteors. [2 definitions]
meteorite a piece of rock originating from asteroids in outer space that has come through Earth's atmosphere and landed on the surface of this planet.
meteorograph an instrument that measures and records several atmospheric or weather conditions at the same time.
meteoroid matter, ranging in mass from a speck to thousands of tons, that travels through outer space and occasionally passes through the earth's atmosphere.
meteorological of or pertaining to the atmosphere, weather, or climate. [2 definitions]