What does array mean?
An array is an ordered arrangement or, more commonly today, an impressively varied and extensive collection of things. The word carries connotations of abundance and visual richness: a shop might stock a dazzling array of fabrics, a menu offer an enticing array of dishes, or a politician face a bewildering array of challenges. Its older sense — a formal lineup or display, as of soldiers drawn up in battle order — survives chiefly in literary and military contexts. Since the mid-twentieth century, array has also become fundamental vocabulary in computing, where it denotes a data structure that stores elements in indexed positions, allowing rapid access by number. Both noun and verb exist: as a verb, to array something means to arrange it impressively or dress it splendidly. Versatile and slightly elevated in tone, the word suits both everyday description and technical writing, making it a valuable addition to any vocabulary.
An impressively large or varied collection of things; an orderly arrangement or display; in computing, an ordered data structure whose elements are accessed by index.
"The museum houses a remarkable array of ancient artifacts."
Most frequent in the pattern "an array of," typically modified by adjectives like vast, dazzling, or bewildering.
To arrange or deploy people or things in an imposing or orderly way; to dress someone elaborately (usually reflexive, "be arrayed in").
"Soldiers were arrayed along the ridge before dawn."
Formal and literary register; the passive construction "be arrayed in" commonly describes ornate clothing.
Regular plural; used both for multiple collections or displays and for multiple programming data structures.
"The library's arrays of manuscripts drew scholars from around the world."
"Array" began life on medieval battlefields — knights were "arrayed" in rank before it ever described anything in a computer's memory.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of array
Array entered English in the Middle Ages from Anglo-Norman and Old French "areer" / "arai", ultimately deriving from the Germanic root behind Old French "reier", meaning to put in order — the same root that gives us "rank", "range", and "arrange". It originally referred to drawing up troops in battle formation, a sense still echoed when armies are "arrayed" against each other. Over centuries its meaning broadened from military formation to any orderly or impressive display, and in the twentieth century computing adopted it for indexed data structures.
How array is actually used
As a noun, "array" frequently appears in the phrase "an array of," often preceded by an adjective such as dazzling, vast, or bewildering to emphasize variety and abundance. The verb form "to array" is comparatively formal and literary, common in descriptions of troops or ceremonial displays.
Easily confused with array
Harass is unrelated to array; the confusion is mainly phonetic with 'array' as a verb meaning to arrange troops, whereas harass means to trouble persistently.
A ray is a single line of light or a beam, while an array is a whole arrangement or collection — one ray may be part of an array.