of or relating to hydrophobia.
Chemistry. having little or no affinity for water.

Compare oleophilic.

Origin of hydrophobic

First recorded in 1640–50; hydrophobe + -ic
Related formshy·dro·pho·bic·i·ty [hahy-druh-foh-bis-i-tee] /ˌhaɪ drə foʊˈbɪs ɪ ti/, nounnon·hy·dro·pho·bic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for hydrophobic

Historical Examples of hydrophobic

British Dictionary definitions for hydrophobic



of or relating to hydrophobia
chem tending not to dissolve in, mix with, or be wetted by watera hydrophobic colloid Compare hydrophilic
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

Word Origin and History for hydrophobic

1807, from hydrophobia + -ic.

Online Etymology Dictionary, © 2010 Douglas Harper

hydrophobic in Medicine


[hī′drə-fōbĭk, -fŏbĭk]


Repelling, tending not to combine with, or unable to dissolve in water.
Of or exhibiting hydrophobia.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.