The Collaborative International Dictionary
Implex
Implex \Im"plex\, a. [L. implexus, p. p. of implectere to infold; pref. im- in + plectere to plait: cf. F implexe.] Intricate; entangled; complicated; complex.
The fable of every poem is . . . simple or implex. it
is called simple when there is no change of fortune in
it; implex, when the fortune of the chief actor changes
from bad to good, or from good to bad.
--Addison.
Wiktionary
implex
a. intricate, involved, entangled, complicated, complex. n. A genealogical coefficient of a given genealogical tree; defined as the difference between the number of theoretical ancestors of a person and the number of his/her real ones in a given generation.