simplex
Americanadjective
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simple; consisting of or characterized by a single element.
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pertaining to or noting a telecommunications system permitting communication in only one direction at a time.
noun
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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.
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an apartment having all the rooms on one floor.
adjective
noun
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linguistics a simple not a compound word
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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
Other Word Forms
Etymology
Origin of simplex
1585–95; < Latin: having a single layer, literally, one-fold, equivalent to sim-, base meaning “one” (akin to similis similar, Greek hén (neuter) one, homós same ( see homo-), English same ) + -plex -plex
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The biotech’s experimental cancer treatment is a genetically engineered version of the Herpes Simplex Virus type 1, the same virus that causes cold sores.
From Barron's • Apr. 10, 2026
However, Malawi's Finance Minister Simplex Chithyola Banda said it was the government's decision to suspend the loan as there was a disagreement over terms.
From BBC • Jun. 27, 2025
"The time has come to launch these funds," said Hiromasa Mizushima, chief executive officer for Simplex Asset Management.
From Reuters • Aug. 30, 2023
In June, Elizabeth’s genetic tests came back, showing that she has EB Simplex, Generalized Severe.
From Washington Post • May 30, 2017
"You've hit it," cried Valentine, giving Simplex a mighty blow on the back from sheer friendship.
From Pretty Michal by Jókai, Mór
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
