Skip to Content


Pronunciation: ma'triks, mat'riks; ma'tri-sez, mat'ri-sez


  1. The formative portion of a nail.
  2. The intercellular substance of a tissue.
  3. A surrounding substance within which something is contained or embedded, the fatty tissue in which blood vessels or lymph nodes lie provides a matrix for these embedded structures.
  4. A mold in which anything is cast or swaged; a counterdie; an instrument, plastic material, or metal strip specially shaped for holding and shaping the material used to fill a tooth cavity.
  5. A rectangular array of numbers or symbol quantities that simplify the execution of linear operations of tedious complexity, the Ito method; the theory of matrices is widely used in solving simultaneous equations and in population genetics.
  6. The support or stationary phase in chromatography or zone electrophoresis.

[L. womb; female breeding animal]

Disclaimer: This site is designed to offer information for general educational purposes only. The health information furnished on this site and the interactive responses are not intended to be professional advice and are not intended to replace personal consultation with a qualified physician, pharmacist, or other healthcare professional. You must always seek the advice of a professional for questions related to a disease, disease symptoms, and appropriate therapeutic treatments.
© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.