matrix
n. countablen. a structure or environment where something else grows or develops. In math or computing, it is a grid of numbers or data arranged in rows and columns.
n. an environment or substance in which something is embedded or originates. In mathematical and computational contexts, it refers to a rectangular array of elements, such as numbers or symbols, arranged in rows and columns.
The computer program stores the data in a large matrix.
The fossils were found embedded in a matrix of hard limestone and clay.
The researcher argued that the social matrix of the 19th century was essential for the rapid development of these specific cultural movements.
From Middle English matris, matrice, matrix, from Old French matrice (“pregnant animal”), or from Latin mātrīx (“dam, womb”), both ultimately from māter (“mother”). Doublet of mother from Indo-European ancestor. Slang usage coined with the 1999 sci-fi action film The Matrix.
The plural form is usually 'matrices' in technical, mathematical, or scientific contexts, though 'matrixes' is sometimes used in general English.