dialysis

noun
di·​al·​y·​sis | \ dī-ˈa-lə-səs How to pronounce dialysis (audio) \
plural dialyses\ dī-​ˈa-​lə-​ˌsēz How to pronounce dialysis (audio) \

Definition of dialysis

1 : the separation of substances in solution by means of their unequal diffusion through semipermeable membranes especially : such a separation of colloids from soluble substances
2 : the process of removing blood from an artery (as of a patient affected with kidney failure), purifying it by dialysis, adding vital substances, and returning it to a vein

called also hemodialysis

Other Words from dialysis

dialytic \ ˌdī-​ə-​ˈli-​tik How to pronounce dialysis (audio) \ adjective

Examples of dialysis in a Sentence

Recent Examples on the Web McDougall continued with dialysis for about five hours, three days a week. Brittany Mcgee, ajc, 7 May 2022 Hank Goldberg stopped after two hours of dialysis Friday, rather than his customary three hours. Dave Hyde, sun-sentinel.com, 19 Feb. 2022 Gil Kaminski joins after a long stint directing operations for DaVita dialysis centers. Katie Palmer, STAT, 15 Dec. 2021 The state regulator, the Department of Community Health, failed to respond to questions about why so many dialysis centers failed to meet federal standards. Jennifer Peebles, ajc, 7 Dec. 2021 The mandate applies to all facilities that take payments from Medicare or Medicaid, including hospitals, nursing homes, dialysis centers, ambulatory surgical centers and home health agencies. Ken Alltucker, USA TODAY, 5 Nov. 2021 Respondents encourage them to give up on hospitals and health systems and apply for positions at nursing homes or dialysis centers. Ryan Craig, Forbes, 29 Oct. 2021 Meanwhile, the Centers for Medicare & Medicaid Services will extend a vaccination requirement issued earlier this summer — for nursing home staff — to other healthcare settings including hospitals, home-health agencies and dialysis centers. Zeke Miller, Chron, 10 Sep. 2021 Meanwhile, the Centers for Medicare & Medicaid Services will extend a vaccination requirement issued earlier this summer — for nursing home staff — to other healthcare settings including hospitals, home health agencies and dialysis centers. The Salt Lake Tribune, 9 Sep. 2021 See More

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

First Known Use of dialysis

1861, in the meaning defined at sense 1

History and Etymology for dialysis

New Latin, from Greek, separation, from dialyein to dissolve, from dia- + lyein to loosen — more at lose

Learn More About dialysis

Time Traveler for dialysis

Time Traveler

The first known use of dialysis was in 1861

See more words from the same year

Dictionary Entries Near dialysis

dialyse

dialysis

dialyze

See More Nearby Entries 

Statistics for dialysis

Last Updated

10 May 2022

Cite this Entry

“Dialysis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dialysis. Accessed 21 May. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for dialysis

dialysis

noun
di·​al·​y·​sis | \ dī-ˈal-ə-səs How to pronounce dialysis (audio) \
plural dialyses\ -​ˌsēz How to pronounce dialysis (audio) \

Medical Definition of dialysis

1 : the separation of substances in solution by means of their unequal diffusion through semipermeable membranes especially : such a separation of colloids from soluble substances
2 : either of two medical procedures to remove wastes or toxins from the blood and adjust fluid and electrolyte imbalances by utilizing rates at which substances diffuse through a semipermeable membrane:
a : the process of removing blood from an artery (as of a kidney patient), purifying it by dialysis, adding vital substances, and returning it to a vein

called also hemodialysis

b : a procedure performed in the peritoneal cavity in which the peritoneum acts as the semipermeable membrane

called also peritoneal dialysis

Other Words from dialysis

dialytic \ ˌdī-​ə-​ˈlit-​ik How to pronounce dialysis (audio) \ adjective

More from Merriam-Webster on dialysis

Britannica English: Translation of dialysis for Arabic Speakers

Britannica.com: Encyclopedia article about dialysis

WORD OF THE DAY

Test Your Vocabulary

Great Words for Scrabble

  • scrabble tiles that read scrabble quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!