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a combining form representing cyst in the formation of compound words: cystolith.
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Also cyst-, -cyst, cysti-.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022


What does cysto- mean?

The combining form cysto- is used like a suffix meaning “cyst,” which is a scientific term for a bladder, sac, or vesicle. It is often used in scientific terms, especially in biology and pathology.

The form cysto- comes from Greek kýstis, meaning “bag,” “pouch,” or “bladder.”

What are variants of cysto-?

When combined with words or word elements that begin with a vowel, cysto- becomes cyst-, as in cystoma.

A rare variant of cysto- is cysti-, as in cysticercus.

When used as a suffix, the combining form cyst- becomes -cyst, as in oocyst. Want to know more? Read our Words That Use articles for these forms.

Examples of cysto-

An example of a medical term that features cysto- is cystotomy, “surgical incision into the gall bladder or urinary bladder.”

Here, the form cysto- is used to mean “bladder.” The -tomy portion of the word means “cutting, incision” from Greek -tomia. Cystotomy literally translates to “bladder incision.”

What are some words that use the combining form cysto-?

What are some other forms that cysto- may be commonly confused with?

Break it down!

The suffix -scope means “instrument for viewing.” Keeping this in mind, what is a cystoscope?

How to use cysto- in a sentence

British Dictionary definitions for cysto-


before a vowel cyst-

combining form
indicating a cyst or bladdercystocarp; cystoscope
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for cysto-


Bladder; cyst; sac:cystocele.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.