simplex
Definition, pronunciation, etymology, and usage for the English word. Free spelling reference powered by Wiktionary.
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English
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Detailed reference entry for the English word "simplex", 7-letters, with pronunciation in International Phonetic Alphabet notation, etymology traced through Germanic and Romance roots where applicable, common misspelling variants catalogued from Hunspell error dictionaries, and usage frequency ranked against the top 100,000 English words in the Wordfreq corpus. PlainSpell covers English, Spanish, Portuguese, French, and German spelling with confusable-pair detection that highlights visually and phonetically similar words. This entry for "simplex" includes synonyms, antonyms, homophones, and cross-language translation pointers sourced from Wiktionary via the kaikki.org extract. Whether you are verifying the correct spelling of "simplex" for academic writing, checking homophone confusion, or exploring etymological origins, this page provides a citation-backed, free reference that requires no sign-up.
simplex is anEnglishadj. It means: Having a single structure; not composite or complex; undivided, unitary. Pronounced /ˈsɪmplɛks/. Often confused with simply and simple.
| Property | Value |
|---|---|
| Headword | simplex |
| Language | English |
| Part of speech | Adj |
| IPA | /ˈsɪmplɛks/ |
| Letters | 7 |
| Frequency rank | #30,229 |
| Misspellings tracked | 11 |
| Confusable pairs | 6 |
| Source | Wiktionary (kaikki.org) |
Frequency rank visualization
Spelling & Dictionary Insight
The English entry for simplex is 7 letters long, classified as anadj, and transcribed in the International Phonetic Alphabet as /ˈsɪmplɛks/. Corpus data places it at rank #30,229 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it.Wiktionary records 7 distinct senses for this headword, so context determines which meaning a reader should apply.
Our Hunspell-derived misspelling index lists 11 documented wrong-spelling variants for simplex, with forms such as "ismplex", "simlpex", and "simmplex". Each variant represents a distinct typo pattern that appears often enough in corpora to be worth flagging, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution.It also participates in 6 confusable-pair relationships, "simply", "simple", "sample", and more, where similar look or sound leads writers to substitute one word for another in context.
Etymologically, the entry records: The adjective is a learned borrowing from Latin simplex (“plain, simple; single”). The first part, sim-, comes from Proto-Indo-European *sem-, *sm̥- (“one; together”). The second part, -plex, may be from *pleḱ- (“to weave”). The noun is derived from the adj… Root origin matters for spelling because borrowed morphemes (Greek, Latin, Old French, Old English) carry their source-language orthographic conventions into modern English, which is why historical etymology is often the cleanest predictor of whether a cluster like "-ough", "-eau", or "-tion" will appear. For readers arriving here from a spelling check, the authoritative guidance is: the correct English form is simplex, spelled S-I-M-P-L-E-X, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.
Definition
- 1Having a single structure; not composite or complex; undivided, unitary.
- 2Of an eye: (supposedly) having pigment on only the posterior surface of the iris and not the anterior surface, and thus appearing blue; this was later found to be inaccurate, as eye colour is due to the amount of pigment in the anterior surface of the iris; also, of eye pigmentation: present only on the posterior surface of the iris; and of a person: having eyes with this form of pigmentation.
- 3Of a circuit or device: involving signals which travel in one direction at a time; unidirectional.
- 4Of a polyploid organism: having one dominant allele at a given locus on all homologous chromosomes.
- 5Synonym of heterozygous (“of an organism: having two different alleles in a given gene”).
- 6Of a word: having no (derivational) affixes; simple, monomorphemic, uncompounded.
- 7Of an apartment (or, sometimes, another type of property): having only one floor or storey; single-storey.
Etymology
The adjective is a learned borrowing from Latin simplex (“plain, simple; single”). The first part, sim-, comes from Proto-Indo-European *sem-, *sm̥- (“one; together”). The second part, -plex, may be from *pleḱ- (“to weave”). The noun is derived from the adjective. The plural forms simplices and simplicia are learned borrowings from Latin simplicēs (masculine or feminine) and simplicia (neuter), respectively plural forms of simplex. Noun noun sense 1 (“generalization of a triangle or tetrahedron to an arbitrary dimension”) was apparently coined by the Dutch mathematician Pieter Hendrik Schoute (1846–1913) as a short version of Simplicissimum in Mehrdimensionale Geometrie (in German, 1902). (In his pioneering works on algebraic topology, the French mathematician Henri Poincaré (1854–1912) had previously introduced the concept, but not the actual term simplex.)
This word in other languages
Common misspellings
Also misspelled as: ismplex,simlpex,simmplex,simpelx,simplexx,simpllex,simplxe,simpplex,sipmlex,smiplex,ssimplex
Misspelling Pattern Breakdown
Relative frequency of common misspelling types for simplex
Misspelling Variants of "simplex"
Frequency rank: #30,229 in English
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Nearby English words
Other entries that begin with the letter S in our English index: