Akademik

Medial
The side of the body or body part that is nearer to the middle or center (median) of the body. For example, when referring to the knee, medial would mean the side of the knee that is closest to the other knee The opposite of medial is lateral.
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Relating to the middle or center; nearer to the median or midsagittal plane. SYN: medialis [TA]. [L. medialis, middle]

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me·di·al 'mēd-ē-əl adj
1) lying or extending in the middle esp, of a body part lying or extending toward the median axis of the body <the \medial surface of the tibia>
2) of or relating to the media of a blood vessel <necrosis and lipid deposition with \medial involvement>
me·di·al·ly -ə-lē adv

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adj.
relating to or situated in the central region of an organ, tissue, or the body.

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me·di·al (meґde-əl) [L. medialis] 1. pertaining to the middle; closer to the median plane or the midline of a body or structure. 2. pertaining to the middle layer of structures.

Medical dictionary. 2011.