synthetic

American  

[sin-thet-ik] / sɪnˈθɛt ɪk /

adjective

1. of, pertaining to, proceeding by, or involving synthesis (opposed to analytic).

2. noting or pertaining to compounds formed through a chemical process by human agency, as opposed to those of natural origin.

   synthetic vitamins; synthetic fiber.

3. (of a language) characterized by a relatively widespread use of affixes, rather than separate words, to express syntactic relationships.

   Latin is a synthetic language, while English is analytic.

4. Logic. Also synthetical. of or relating to a noncontradictory proposition in which the predicate is not included in, or entailed by, the subject.

5. not real or genuine; artificial; feigned.

   a synthetic chuckle at a poor joke.

   Synonyms:

   sham, counterfeit, phony, fake

6. Jewelry.

   1. noting a gem mineral manufactured so as to be physically, chemically, and optically identical with the mineral as found in nature.

   2. (not in technical use) noting a gem mineral manufactured and pigmented in imitation of a natural gemstone of that name.

---

noun

1. something made by a synthetic, or chemical, process.

2. synthetics.

   1. substances or products made by chemical synthesis, as plastics or artificial fibers.

   2. the science or industry concerned with such products.

synthetic British  

/ sɪnˈθɛtɪk /

adjective

1. (of a substance or material) made artificially by chemical reaction

2. not genuine; insincere

   synthetic compassion

3. denoting languages, such as Latin, whose morphology is characterized by synthesis Compare polysynthetic agglutinative analytic

4. philosophy

   1. (of a proposition) having a truth-value that is not determined solely by virtue of the meanings of the words, as in all men are arrogant

   2. contingent Compare a posteriori empirical

---

noun

1. a synthetic substance or material

synthetic Scientific  

/ sĭn-thĕt′ĭk /

1. Produced artificially, especially in a laboratory or other man-made environment. Nylon is a synthetic chemical compound.

---

Other Word Forms

• nonsynthetic adjective
• nonsynthetical adjective
• nonsynthetically adverb
• synthetically adverb
• unsynthetic adjective
• unsynthetically adverb

Etymology

Origin of synthetic

1690–1700; < New Latin syntheticus < Greek synthetikós, equivalent to synthet ( ós ) placed together, verbid of syntithénai to put together ( syn- syn- + the-, stem of tithénai to put, place + -tos verbid suffix) + -ikos -ic

Explanation

Something made of artificial material, not natural items, can be described as synthetic. Some football stadiums have synthetic grass, and a leisure suit from the 1970s might be made of synthetic fabric. The adjective synthetic usually describes things created by chemical synthesis (synthetic compound, synthetic drug, synthetic material), but it sometimes describes an emotion that is feigned or not genuine. A person who exudes only synthetic friendliness probably isn't someone you want to hang out with, for example.

Example Sentences

"Spatially variable birefringence, that is, the difference in the propagation of different polarizations of light, acts like a synthetic magnetic field," explains Dr. Piotr Kapuściński of the Faculty of Physics at the University of Warsaw.

From Science Daily • Apr. 25, 2026

Foundayo, meanwhile, contains a synthetic chemical called orforglorpin that is designed to fit into the same receptor as the natural hormone.

From Barron's • Apr. 24, 2026

On a year-over-year basis, the increase was led by gold, silver and platinum-group metal ores, followed by conventional and synthetic crude oil, and cattle and calves.

From The Wall Street Journal • Apr. 23, 2026

Stewart also pointed to new forms of identity theft where criminals create synthetic identities and social-media accounts mimicking the behaviors of real people.

From MarketWatch • Apr. 18, 2026

He paused, then said, “We all came here together on the same ship from Mars. Not Resch; he stayed behind another week, receiving the synthetic memory system.”

From "Do Androids Dream of Electric Sheep?" by Philip K. Dick

Related Words

• fabricated
• manufactured