Dictionary.com

simplex

[ sim-pleks ]
/ ˈsɪm plɛks /
Save This Word!

adjective
simple; consisting of or characterized by a single element.
pertaining to or noting a telecommunications system permitting communication in only one direction at a time.
noun, plural sim·plex·es, sim·pli·ces [sim-pluh-sees]. /ˈsɪm pləˌsis/.
Mathematics. a basic geometric element in a Euclidean space, being a line segment in one dimension, a triangle in two dimensions, a tetrahedron in three dimensions, and so on: used in topology and linear programming.
an apartment having all the rooms on one floor.
QUIZ
CAN YOU ANSWER THESE COMMON GRAMMAR DEBATES?
There are grammar debates that never die; and the ones highlighted in the questions in this quiz are sure to rile everyone up once again. Do you know how to answer the questions that cause some of the greatest grammar debates?
Question 1 of 7
Which sentence is correct?

Origin of simplex

1585–95; <Latin: having a single layer, literally, one-fold, equivalent to sim-, base meaning “one” (akin to similissimilar, Greek hén (neuter) one, homós same (see homo-), English same) + -plex-plex
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use simplex in a sentence

British Dictionary definitions for simplex

simplex
/ (ˈsɪmplɛks) /

adjective
permitting the transmission of signals in only one direction in a radio circuit, etcCompare duplex
noun
linguistics a simple not a compound word
geometry the most elementary geometric figure in Euclidean space of a given dimension; a line segment in one-dimensional space or a triangle in two-dimensional space

Word Origin for simplex

C16: from Latin: simple, literally: one-fold, from sim- one + plex, from plicāre to fold; compare duplex
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
FEEDBACK