Com″plex (kŏm″plĕks), 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.
Ideas thus made up of several simple ones put together, I call complex; such as beauty, gratitude, a man, an army, the universe.
Locke.
2. Involving many parts; complicated; intricate.
When the actual motions of the heavens are calculated in the best possible way, the process is difficult and complex.
Whewell.
Complex fraction. See Fraction. — Complex number(Math.), in the theory of numbers, an expression of the form a + b√-1, when a and b are ordinary integers.
Syn. — See Intricate.