a complex structure, such as the universe or society, regarded as an entirety, as opposed to microcosms, which have a similar structure and are contained within it
2.
any complex entity regarded as a complete system in itself
[C16: via French and Latin from Greek makros kosmos great world]
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a chattering or flighty, light-headed person.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
c.1600, "the great world" (the universe, as distinct from the "little world" of man), from O.Fr. macrocosme (c.1300), from M.L. macrocosmus, from Gk. makros "large, long" (see macro-) + kosmos "cosmos" (see cosmos).