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matrix medical definition
noun pl. ma·trix·es or ma·tri·ces
- A surrounding substance within which something else originates, develops, or is contained.
- The womb.
- The formative cells or tissue of a fingernail, toenail, or tooth.
- See ground substance.
- A specially shaped instrument, plastic material, or metal strip for holding and shaping the material used in filling a tooth cavity.
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