matrix
Noun

(mathematics) a rectangular array of quantities or expressions set out by rows and columns
Treated as a single element and manipulated according to rules (synset 108284561)domain category: math, mathematics, maths  a science (or group of related sciences) dealing with the logic of quantity and shape and arrangementhypernym: array  an orderly arrangementhyponym: correlation matrix  a matrix giving the correlations between all pairs of data sets
 dot matrix  a rectangular matrix of dots from which written characters can be formed
 square matrix  a matrix with the same number of rows and columns
 real matrix  a matrix whose elements are all real numbers
 transpose  a matrix formed by interchanging the rows and columns of a given matrix

(geology) a mass of finegrained rock in which fossils, crystals, or gems are embedded (synset 114973365)
domain category: geology  a science that deals with the history of the earth as recorded in rocks

An enclosure within which something originates or develops (from the Latin for womb) (synset 109371952)
hypernym: enclosure, natural enclosure  a naturally enclosed space

The body substance in which tissue cells are embedded (synset 105589955)
hypernym: body substance  the substance of the bodypart meronym:
 bone, os  rigid connective tissue that makes up the skeleton of vertebrates
 connective tissue  tissue of mesodermal origin consisting of e.g. collagen fibroblasts and fatty cells; supports organs and fills spaces between them and forms tendons and ligaments
 cartilage, gristle  tough elastic tissue; mostly converted to bone in adults
synonym: ground substance, intercellular substance 
The formative tissue at the base of a nail (synset 105589841)
hypernym: animal tissue  the tissue in the bodies of animalspart meronym: nail  horny plate covering and protecting part of the dorsal surface of the digits
 Mold used in the production of phonograph records, type, or other relief surface (synset 103736146)
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