cyst

noun \ ˈsist \
Updated on: 14 Nov 2017

Definition of cyst

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 :a gas-filled vesicle (as of a rockweed or bladderwort)
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

Recent Examples of cyst from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cyst.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of cyst

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


cyst-

combining form
variants: or cysti- or cysto-

Definition of cyst-

:bladder
  • cystitis
:sac
  • cystocarp

Origin and Etymology of cyst-

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


-cyst

noun combining form

Definition of -cyst

:bladder :sac
  • blastocyst

Origin and Etymology of -cyst

New Latin -cystis, from Greek kystis


CYST Defined for English Language Learners

cyst

noun

Definition of cyst for English Language Learners

  • medical : a growth filled with liquid that forms in or on your body


CYST Defined for Kids

cyst

noun \ ˈsist \

Definition of cyst for Students

1 :an abnormal lump or sac that forms in or on the body
2 :a saclike structure with a protective covering or a body (as a spore) with such a covering

Medical Dictionary

cyst

noun \ ˈsist \

medical Definition of cyst

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 2a


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