Array and Matrix

array

An orderly arrangement.
- usage: "an array of troops in battle order"
An impressive display.
- usage: "it was a bewildering array of books"; "his tools were in an orderly array on the basement wall"
Especially fine or decorative clothing.
- synonyms: raiment, regalia
An arrangement of aerials spaced to give desired directional characteristics.

Lay out orderly or logically in a line or as if in a line.
- usage: "lay out the clothes"; "lay out the arguments"
- synonyms: range, lay out, set out
Align oneself with a group or a way of thinking.
- synonyms: align

(n.) Order; a regular and imposing arrangement; disposition in regular lines; hence, order of battle; as, drawn up in battle array.
(n.) To deck or dress; to adorn with dress; to cloth to envelop; -- applied especially to dress of a splendid kind.
(n.) To place or dispose in order, as troops for battle; to marshal.
(n.) The whole body of jurors summoned to attend the court.
(n.) To set in order, as a jury, for the trial of a cause; that is, to call them man by man.
(n.) A ranking or setting forth in order, by the proper officer, of a jury as impaneled in a cause.
(n.) The whole body of persons thus placed in order; an orderly collection; hence, a body of soldiers.
(n.) An imposing series of things.
(n.) Dress; garments disposed in order upon the person; rich or beautiful apparel.
(n.) The panel itself.

Webster's Revised Unabridged Dictionary

matrix

Mathematics) a rectangular array of quantities or expressions set out by rows and columns; treated as a single element and manipulated according to rules. (
Geology) amass of fine-grained rock in which fossils, crystals, or gems are embedded. (
An enclosure within which something originates or develops (from the Latin for womb. )
The body substance in which tissue cells are embedded.
- synonyms: intercellular substance, ground substance
The formative tissue at the base of a nail.
Mold used in the production of phonograph records, type, or other relief surface. .

(n.) Hence, that which gives form or origin to anything.
(n.) A rectangular arrangement of symbols in rows and columns. The symbols may express quantities or operations.
(n.) The womb.
(n.) The cavity in which anything is formed, and which gives it shape; a die; a mold, as for the face of a type.
(n.) The five simple colors, black, white, blue, red, and yellow, of which all the rest are composed.
(n.) The earthy or stony substance in which metallic ores or crystallized minerals are found; the gangue.
(n.) The lifeless portion of tissue, either animal or vegetable, situated between the cells; the intercellular substance.

Webster's Revised Unabridged Dictionary

matrix is a mailing list of creditors of the debtor. Done as part of the forms filled out for a Chapter 11 case.