cyst

1 of 3

noun

1
: a closed sac having a distinct membrane and developing abnormally in a cavity or structure of the body
2
: a body resembling a cyst: such as
a
: a resting spore of many algae
b
: the air bladder of certain algae or aquatic plants (such as rockweed)
c
: a capsule formed about a minute organism going into a resting or spore stage
also : this capsule with its contents
d
: a resistant cover about a parasite produced by the parasite or the host

cyst-

2 of 3

combining form

variants or cysti- or cysto-
: bladder
cystitis
: sac
cystocarp

-cyst

3 of 3

noun combining form

: bladder : sac
blastocyst

Examples of cyst in a Sentence

Recent Examples on the Web
Noun
They were told Yang had a 10-centimeter cyst growing on his kidney. Michael E. Miller, Washington Post, 5 Feb. 2024 Acne is a skin condition usually consisting of blackheads, whiteheads, pimples, or acne cysts and nodules (painful acne). Bella Gerard, Health, 26 Jan. 2024 When the sea temperature decreased or increased, the species of dinoflagellates in the ancient seawater also changed, and the researchers could determine climate changes from the species’ distinctive cysts. Tom Metcalfe, Scientific American, 26 Jan. 2024 This includes blackheads, whiteheads, pimples, and cysts. Jenn Barthole, Glamour, 17 Jan. 2024 Note: There’s a difference between a true cyst and an acne cyst, according to Dr. Jaliman. Daley Quinn, Women's Health, 8 Sep. 2023 Latent cysts have been shown to cause structural changes in the brain as well as alterations in hormones and neurochemistry. Bill Sullivan, Discover Magazine, 2 Jan. 2024 Causes for the pain can include vaginal dryness and inflammation or vaginal cysts. Dr. Roshini Raj, Health, 31 Dec. 2023 This jellyfish reabsorbs its tentacles and sinks to the ocean bottom, resembling a cyst on the floor. Katie Liu, Discover Magazine, 14 Dec. 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'cyst.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Noun

New Latin cystis, from Greek kystis bladder, pouch; akin to Sanskrit śvasiti he blows, snorts — more at wheeze

Combining form

French, from Greek kyst-, kysto-, from kystis

Noun combining form

New Latin -cystis, from Greek kystis

First Known Use

Noun

circa 1723, in the meaning defined at sense 1

Time Traveler
The first known use of cyst was circa 1723

Dictionary Entries Near cyst

Cite this Entry

“Cyst.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cyst. Accessed 23 Feb. 2024.

Kids Definition

cyst

noun
1
: a closed pouch or sac of fluid or solid material that develops in the body in some diseased conditions
2
: a covering resembling a cyst or a body (as a spore) with such a covering
cystic
ˈsis-tik
adjective

Medical Definition

cyst

noun
1
: a closed sac having a distinct membrane and developing abnormally in a body cavity or structure
2
: a body resembling a cyst: as
a
: a capsule formed about a minute organism going into a resting or spore stage
also : this capsule with its contents
b
: a resistant cover about a parasite produced by the parasite or the host compare hydatid sense 2a
Last Updated: - Updated example sentences
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