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Tendinitis

/ˌtɛndɪˈnaɪtɪs/noun

Inflammation of a tendon, usually from repeated strain.

The Greek roots

τένων
ténōn
sinew, tendon
+
-ῖτις
-îtis
inflammation of

Literally: inflamed sinew

The story of the word

The suffix was originally an adjective. Greek -ῖτις was feminine and agreed with νόσος, disease, so ἀρθρῖτις meant joint disease with the noun left off; English took the leftover ending and made it a free word for inflammation. The first half is Latin tendo, though that itself looks like a reshaping of Greek τένων, sinew, under the pull of tendere, to stretch. The spelling tendonitis has now overtaken the older tendinitis in general use.

How it travelled
Ancient Greek → Medieval Latin → English
First recorded
19th century

Same family

arthritisbronchitistenosynovitis

In a sentence

Six weeks of rowing gave her tendinitis in both wrists.

Achilles tendinitis is the runner's standard complaint.

Built on the same root

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