adjective Chemistry.
having a strong affinity for water.

1900–05; hydro-1 + -philic

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World English Dictionary
hydrophilic (ˌhaɪdrəʊˈfɪlɪk)
chem Compare hydrophobic tending to dissolve in, mix with, or be wetted by water: a hydrophilic colloid

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

hydrophilic hy·dro·phil·ic (hī'drə-fĭl'ĭk)
Having an affinity for water; readily absorbing or dissolving in water.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Water droplets form, however, on tiny hydrophilic areas at the peaks of the bumps and roll down to the beetle's mouth.
Second is a hydrophilic coating which attracts water.
There are hydrophilic and hydrophobic parts of the cell membrane.
The head groups are hydrophilic and form an outer barrier around the tails.
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