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in·tra·mu·ral -'myu̇r-əl adj situated or occurring within the substance of the walls of an organ <\intramural infarction> <failure of or delay in \intramural myocardial conduction (Amer. Jour. of Cardiology)>
in·tra·mu·ral·ly -ə-lē adv
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in·tra·mu·ral (in″trə-muґrəl) within the wall of an organ.Medical dictionary. 2011.