An array is a systematic arrangement of similar objects, usually in rows and columns. Things called an array include: Music. In twelve-tone and serial composition, the presentation of simultaneous twelve-tone sets such that the sums of their horizontal segments form a succession of twelve-tone aggregates. Array mbira, a musical instrument. Spiral array model, a music pitch space. Science. Astronomy. A telescope array, also called astronomical interferometer. Biology. Various kinds of multiple biological arrays called microarrays. Visual feature array, a model for the visual cortex.
https://en.wikipedia.org/wiki/Array