matrix

From Middle English matris/matrice, borrowed from Old French matrice ("pregnant animal") or directly from Latin mātrīx ("dam, womb"), both tracing back to Latin māter, meaning mother.

The word began as a term for the womb, the place from which something is born, and that idea of a generative, structuring source carried into later technical and mathematical uses. In 1999, the film The Matrix gave the word a new slang life as shorthand for a simulated reality.

It's a doublet of mother, meaning both words descend from the same Indo-European root and arrived in English by different paths.