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The Collaborative International Dictionary of English v.0.48 (gcide)

Complex \Com"plex\ (k[o^]m"pl[e^]ks), a. [L. complexus, p. p. of
complecti to entwine around, comprise; com- plectere to
twist, akin to plicare to fold. See {Plait}, n.]
1. Composed of two or more parts; composite; not simple; as,
a complex being; a complex idea.
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Ideas thus made up of several simple ones put
together, I call complex; such as beauty, gratitude,
a man, an army, the universe. --Locke.
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2. Involving many parts; complicated; intricate.
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When the actual motions of the heavens are
calculated in the best possible way, the process is
difficult and complex. --Whewell.
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{Complex fraction}. See {Fraction}.

{Complex number} (Math.), in the theory of numbers, an
expression of the form a b[root]-1, when a and b are
ordinary integers.

Syn: See {Intricate}.
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Complex \Com"plex\, n. [L. complexus]
Assemblage of related things; collection; complication.
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This parable of the wedding supper comprehends in it
the whole complex of all the blessings and privileges
exhibited by the gospel. --South.
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{Complex of lines} (Geom.), all the possible straight lines
in space being considered, the entire system of lines
which satisfy a single relation constitute a complex; as,
all the lines which meet a given curve make up a complex.
The lines which satisfy two relations constitute a
congruency of lines; as, the entire system of lines, each
one of which meets two given surfaces, is a congruency.
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