osteoarthritis

[os-tee-oh-ahr-thrahy-tis]
noun Pathology.
the most common form of arthritis, usually occurring after middle age, marked by chronic breakdown of cartilage in the joints leading to pain, stiffness, and swelling.
Also called degenerative joint disease.


Origin:
1875–80; osteo- + arthritis

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Collins
World English Dictionary
osteoarthritis (ˌɒstɪəʊɑːˈθraɪtɪs)
 
n
Also called: degenerative joint disease chronic inflammation of the joints, esp those that bear weight, with pain and stiffness
 
osteoarthritic
 
adj, —n

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

osteoarthritis os·te·o·ar·thri·tis (ŏs'tē-ō-är-thrī'tĭs)
n.
A form of arthritis, occurring mainly in older persons, that is characterized by chronic degeneration of the cartilage of the joints. Also called degenerative joint disease, hypertrophic arthritis, osteoarthrosis.


os'te·o·ar·thrit'ic (-thrĭt'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
osteoarthritis   (ŏs'tē-ō-är-thrī'tĭs)  Pronunciation Key 
A form of arthritis, occurring mainly in older people, that is characterized by chronic degeneration of the cartilage of the joints.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Usually, it is only when their knees become painful that people go to see a
  doctor and osteoarthritis is diagnosed.
Knee replacements can give osteoarthritis patients a new lease on life.
Knee replacement surgery repairs damage and relieves pain in patients with
  severe osteoarthritis or knee injury.
Mao says he next wants to test the procedure in goats, which are a better model
  for human osteoarthritis than rabbits.
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