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Synonyms

simplex

American  
[sim-pleks] / ˈsɪm plɛks /

adjective

  1. simple; consisting of or characterized by a single element.

  2. pertaining to or noting a telecommunications system permitting communication in only one direction at a time.


noun

  • simplexes,
    plural
  • simplices
    plural
  1. 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.

  2. an apartment having all the rooms on one floor.

simplex British  
/ ˈsɪmplɛks /

adjective

  1. permitting the transmission of signals in only one direction in a radio circuit, etc 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

noun

  1. linguistics a simple not a compound word

  2. 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

"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

Other Word Forms

Noun Inflected 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.

See Examples For:

It is based on a modified herpes simplex virus that has been engineered to replicate only inside glioblastoma cells, leaving healthy tissue unaffected.

From Science Daily Mar. 20, 2026

In Fayetteville, North Carolina, in 2020, as in other military towns across the U.S., rates of sexually transmitted infections like syphilis, herpes simplex and HIV are among the highest in the country.

From Salon Jul. 20, 2025

It’s been associated with infections such as the herpes simplex virus and Epstein-Barr virus, as well as Lyme disease and autoimmune disorders.

From Seattle Times Apr. 26, 2024

They didn’t have herpes simplex infection, a dangerous but treatable cause of encephalitis, or HIV, which can cause similar symptoms.

From Science Magazine Nov. 21, 2023

There is thus a complete division into the five kinds, the complex, simplex, crunodal, acnodal and cuspidal.

From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 8 "Cube" to "Daguerre, Louis" by Various

We associate qubits with D-simplexes and X and Z parity checks with x and z simplexes, respectively, obeying x + z ≤ D − 2.

From Nature Sep. 12, 2017

Prices of the 48 condominiums in the complex — duplexes and simplexes outfitted with granite countertops and other upscale touches — ranged from about $375,000 to $550,000.

From New York Times Jun. 3, 2011

Then we have a list; as Livy says,691 "simplices et religiosi homines" were ready with them at any time.

From The Religious Experience of the Roman People From the Earliest Times to the Age of Augustus by W. Warde Fowler

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