Dictionary.com

phthisis

[ thahy-sis, tahy- ]
/ ˈθaɪ sɪs, ˈtaɪ- /
Save This Word!

noun Pathology.
a wasting away.
pulmonary tuberculosis; consumption.
QUIZ
GOOSES. GEESES. I WANT THIS QUIZ ON PLURAL NOUNS!
Test how much you really know about regular and irregular plural nouns with this quiz.
Question 1 of 9
Which of the following nouns has an irregular plural form?

Origin of phthisis

1515–25; <Greek phthísis lung disease, literally, a wasting away, equivalent to phthí(ein) to decay + -sis-sis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use phthisis in a sentence

British Dictionary definitions for phthisis

phthisis
/ (ˈθaɪsɪs, ˈfθaɪ-, ˈtaɪ-) /

noun
any disease that causes wasting of the body, esp pulmonary tuberculosis

Word Origin for phthisis

C16: via Latin from Greek: a wasting away, from phthinein to waste away
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 phthisis

phthisis
[ thīsĭs, tī- ]

n.
A disease characterized by the wasting away or atrophy of the body or part of the body.
Tuberculosis of the lungs. No longer in technical use.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
FEEDBACK