phthis·​ic ˈti-zik How to pronounce phthisic (audio)
phthisic adjective
or phthisical

Word History


Middle English tisike, from Anglo-French, from Latin phthisicus suffering from tuberculosis, from Greek phthisikos, from phthisis

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of phthisic was in the 14th century

Dictionary Entries Near phthisic

Cite this Entry

“Phthisic.” Dictionary, Merriam-Webster, Accessed 30 Nov. 2023.

Medical Definition


1 of 2 noun
phthi·​sic ˈtiz-ik How to pronounce phthisic (audio) ˈtī-sik How to pronounce phthisic (audio)


2 of 2 adjective
variants or phthisical
: of, relating to, or affected with or as if with pulmonary tuberculosis
Love words? Need even more definitions?

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