Simple Definition of synthetic

from our Learner's Dictionary

synthetic

1 of 2

adjective

sɪnˈθɛtɪk

: made by combining different substances : not natural

synthetic drugs/chemicals/rubber

The material is synthetic. [=man-made]

synthetic

2 of 2

noun

plural synthetics

: something made by combining different artificial substances

The drug is a synthetic.

—usually plural

The fabric is made of synthetics.

Cite this Entry

Style

“Synthetic.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/synthetic. Accessed 19 Jun. 2026.

Copy Citation

Popular in Grammar & Usage

'Canceled' or 'cancelled'?

5 Verbal Slip Ups and Language Mistakes

Is that lie 'bald-faced' or 'bold-faced'?

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

The Difference Between 'i.e.' and 'e.g.'

Popular in Wordplay

Simple Definition of synthetic

synthetic

adjective

noun

Cite this Entry

More from Merriam-Webster on synthetic

More from Merriam-Webster

Word of the Day

indomitable

Popular in Grammar & Usage

'Canceled' or 'cancelled'?

5 Verbal Slip Ups and Language Mistakes

Is that lie 'bald-faced' or 'bold-faced'?

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

The Difference Between 'i.e.' and 'e.g.'

Popular in Wordplay

One-Word Oxymorons: Bittersweet, Spendthrift, and More

8 Obscure Words for Sleepy Times

Cattywampus, Taradiddle, and More Funny-Sounding Words

The Words of the Week - Jun 19

12 Lovely and Unusual Words for the Natural World

Popular

'Canceled' or 'cancelled'?

One-Word Oxymorons: Bittersweet, Spendthrift, and More

8 Obscure Words for Sleepy Times

Games & Quizzes