follow Dictionary.com

Stories We Like: Novels For Language Lovers

tachyphylaxis

[tak-uh-fi-lak-sis] /ˌtæk ə fɪˈlæk sɪs/
noun
1.
Medicine/Medical. immediate, temporary immunization against the effects of injection of a toxic extract owing to previous small injections of the same extract.
2.
a decreased response to a medicine given over a period of time so that larger doses are required to produce the same response.
Also, tachyphylaxia
[tak-uh-fi-lak-see-uh] /ˌtæk ə fɪˈlæk si ə/ (Show IPA)
.
Origin
tachy- + Greek phýlaxis a guarding, equivalent to phylak- (stem of phylássein to guard) + -sis -sis
Related forms
tachyphylactic
[tak-uh-fi-lak-tik] /ˌtæk ə fɪˈlæk tɪk/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for tachyphylaxis
  • tachyphylaxis occurs when a medication is applied multiple times and a decreased response takes place.
British Dictionary definitions for tachyphylaxis

tachyphylaxis

/ˌtækɪfɪˈlæksɪs/
noun
1.
very rapid development of tolerance or immunity to the effects of a drug
Word Origin
New Latin, from tachy- + phylaxis on the model of prophylaxis. See prophylactic
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
Cite This Source
tachyphylaxis in Medicine

tachyphylaxis tach·y·phy·lax·is (tāk'ə-fĭ-lāk'sĭs)
n.

  1. Rapid desensitization to a pharmacologically or physiologically active substance produced by inoculation with a series of small doses.

  2. A rapidly decreasing response to a drug following its initial administration.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source

Word of the Day

Difficulty index for tachyphylaxis

Few English speakers likely know this word

Word Value for tachyphylaxis

0
0
Scrabble Words With Friends

Nearby words for tachyphylaxis