synthesis

noun

syn·​the·​sis ˈsin(t)-thə-səs 

plural syntheses ˈsin(t)-thə-ˌsēz 

1

a

: the composition or combination of parts or elements so as to form a whole

b

: the production of a substance by the union of chemical elements, groups, or simpler compounds or by the degradation of a complex compound

c

: the combining of often diverse conceptions into a coherent whole

also : the complex so formed

2

a

: deductive reasoning

b

philosophy : the dialectic combination of thesis and antithesis into a higher stage of truth

3

linguistics : the frequent and systematic use of inflected forms as a characteristic device of a language

Traditionally, the history of English grammar has been described in terms of the shift from synthesis to analysis, i.e. from a language which expresses the relationship between words by means of inflectional endings joined to lexical stems to one which maps such relationships by means of function words such as prepositions.

—Laurel Brinton and Alexander Bergs

compare analysis

synthesist

ˈsin(t)-thə-sist 

noun

Synonyms of synthesis

• mixture
• amalgamation
• blend
• mix
• amalgam
• alloy
• combination
• fusion

Examples of synthesis in a Sentence

a philosophy that is a kind of synthesis of several schools of Western and Eastern thought

Recent Examples on the Web

The systems will support data synthesis, intelligence analysis, and operational planning in complex environments. —Aamir Khollam, Interesting Engineering, 1 May 2026

Synthetic biology is widely recognized as a dual-use field, where advances in gene editing, DNA synthesis and bioengineering may enable not only medical and environmental innovations but also the creation or modification of harmful organisms. —André O. Hudson, The Conversation, 30 Apr. 2026

Pedunculagin stimulates the release of enzymes that trigger NO synthesis, thereby reducing blood pressure as NO levels increase. —Md Published, Verywell Health, 28 Apr. 2026

Those proteins are linked to an array of regulatory actions, including fat synthesis, liver metabolism, immune function and cell survival. —Lauren J. Young, Scientific American, 27 Apr. 2026

Word History

Etymology

Greek, from syntithenai to put together, from syn- + tithenai to put, place — more at do

First Known Use

1589, in the meaning defined at sense 1a

Phrases Containing synthesis

• synthesis gas

Rhymes for synthesis

• synthesise
• biosynthesis
• photosynthesis
• nucleosynthesis

Kids Definition

synthesis

noun

syn·​the·​sis ˈsin(t)-thə-səs 

plural syntheses -thə-ˌsēz 

1

: the combination of parts or elements so as to form a whole

especially : the production of a substance by union of chemically simpler substances

2

a

: the combining of often very different ideas into an ordered whole

b

: the product so formed

Medical Definition

synthesis

noun

syn·​the·​sis ˈsin(t)-thə-səs 

plural syntheses -ˌsēz 

1

: the composition or combination of parts or elements so as to form a whole

2

: the production of a substance by the union of chemical elements, groups, or simpler compounds or by the degradation of a complex compound

protein synthesis