SIMPLEX

simplex

(adjective) allowing communication in only one direction at a time, or in telegraphy allowing only one message over a line at a time; “simplex system”

simplex

(adjective) having only one part or element; “a simplex word has no affixes and is not part of a compound--like ‘boy’ compared with ‘boyish’ or ‘house’ compared with ‘houseboat’”

Source: WordNet® 3.1

---

Etymology

Adjective

simplex (not comparable)

Single, simple; not complex.

(telecommunications) unidirectional

Antonyms

• (simple): complex

• (unidirectional): duplex (bidirectional)

Coordinate terms

(unidirectional)

• half-duplex

• semiduplex

• full duplex

Noun

simplex (plural simplexes or simplices)

(geometry, algebraic topology) An analogue in any dimension of the triangle or tetrahedron: the convex hull of n+1 points in n-dimensional space.

(linguistics) A simple word, one without affixes.

Source: Wiktionary

---