*a.**complexus*, p. p. of
*complecti* to entwine around, comprise; *com-* +
*plectere* to twist, akin to *plicare* to fold. See
__Plait__, *n.***1.***complex* being; a *complex* idea.

Ideas thus made up of several simple ones put together, I callcomplex; such as beauty, gratitude, a man, an army, the universe.

Locke.

**2.**

When the actual motions of the heavens are calculated in the best possible way, the process is difficult andcomplex.

Whewell.

**Complex fraction**__Fraction__.**Complex number***(Math.)*, *a + b√-1*, when *a* and *b* are
ordinary integers.

**Syn.** -- See __Intricate__.

*n.**complexus*]

This parable of the wedding supper comprehends in it the wholecomplexof all the blessings and privileges exhibited by the gospel.

South.

**Complex of lines***(Geom.)*, *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*.