synthesis

/ˈsɪnθəsɪs/

//ˈsɪnθəsɪs// noun

"synthesis" is a 9-letter English headword indexed on PlainSpell.

The verdict

“synthesis” is a regularly-used English word, ranked #9,110 in English word frequency and used as a noun.

#9,110
frequency rank, English
9
letters
15
tracked misspellings
2
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The formation of something complex or coherent by combining simpler things.

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

synthesis vs synthetic
78% similar
synthesis vs synthesize
80% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for synthesis
PropertyValue
Headwordsynthesis
LanguageEnglish
Part of speechNoun
IPA/ˈsɪnθəsɪs/
Letters9
Frequency rank#9,110
Misspellings tracked15
Confusable pairs2
SourceWiktionary (kaikki.org)

Where “synthesis” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). synthesis lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for synthesis is 9 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈsɪnθəsɪs/. Corpus data places it at rank #9,110 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 10 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 15 likely wrong-spelling variants for synthesis, with forms such as "snythesis", "ssynthesis", and "synhtesis". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 2 confusable-pair relationships, "synthetic", "synthesize", since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From Latin synthesis, from Ancient Greek σύνθεσις (súnthesis, “a putting together; composition”), from συντίθημι (suntíthēmi, “put together, combine”), from συν- (sun-, “together”) + τίθημι (títhēmi, “set, place”). Doublet of sandhi. The correct English form is synthesis, spelled S-Y-N-T-H-E-S-I-S.

Definition

  1. 1
    The formation of something complex or coherent by combining simpler things.
  2. 2
    Creation of a complex waveform by summation of simpler waveforms.
  3. 3
    The reaction of elements or compounds to form more complex compounds.
  4. 4
    A deduction from the general to the particular, by applying the rules of logic to a premise.
  5. 5
    The combination of thesis and antithesis.
  6. 6
    In intelligence usage, the examining and combining of processed information with other information and intelligence for final interpretation.
  7. 7
    An apt arrangement of elements of a text, especially for euphony.
  8. 8
    The uniting of ideas into a sentence.
  9. 9
    The reunion of parts that have been divided.
  10. 10
    An Ancient Roman dining-garment.

Etymology

From Latin synthesis, from Ancient Greek σύνθεσις (súnthesis, “a putting together; composition”), from συντίθημι (suntíthēmi, “put together, combine”), from συν- (sun-, “together”) + τίθημι (títhēmi, “set, place”). Doublet of sandhi.

Antonyms

This word in other languages

Common misspellings

Also misspelled as: snythesis,ssynthesis,synhtesis,synnthesis,syntehsis,syntheiss,synthesiss,synthessi,synthessis,synthhesis,synthseis,syntthesis,sytnhesis,syynthesis,ysnthesis

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of synthesis - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

snythesis2ssynthesis1synhtesis2synnthesis1syntehsis2syntheiss2synthesiss1synthessi2
Edit distance from "synthesis"

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "synthesis"?
"synthesis" is spelled S-Y-N-T-H-E-S-I-S. The IPA pronunciation is /ˈsɪnθəsɪs/.
What does "synthesis" mean?
As a noun, "synthesis" means: The formation of something complex or coherent by combining simpler things.
What words are commonly confused with "synthesis"?
"synthesis" is commonly confused with "synthetic", "synthesize". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "synthesis"?
The IPA (International Phonetic Alphabet) transcription for "synthesis" is /ˈsɪnθəsɪs/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "synthesis"?
From Latin synthesis, from Ancient Greek σύνθεσις (súnthesis, “a putting together; composition”), from συντίθημι (suntíthēmi, “put together, combine”), from συν- (sun-, “together”) + τίθημι (títhēmi, “set, place”). Doublet of sandhi. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “synthesis”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is S-Y-N-T-H-E-S-I-S - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈsɪnθəsɪs/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “synthetic” - see the side-by-side comparison. synthesis vs synthetic
  • Browse more English words and confusable pairs in the same reference. English words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list