What does hydrophile mean?
In chemistry, a hydrophile is a group or region with a strong affinity for water. It is the water-attracting counterpart of a hydrophobe and often forms part of a larger amphiphilic molecule alongside a water-repelling hydrophobic region. The term is especially useful in formulations, biochemistry, and materials science when describing how a substance interacts with an aqueous environment. A hydrophile does not necessarily dissolve completely; it may simply prefer interaction with water, often through polar or charged groups. While “hydrophilic” is the more familiar adjective, “hydrophile” names the water-loving group or material itself. Outside technical contexts, the word is uncommon, but it provides a precise way to distinguish attraction to water from a general belief that a substance is merely wet. Its usefulness lies in linking molecular structure with observable behavior in water.
nounA molecular group, region, or substance that has an affinity for water and interacts favorably with it.
- A molecular group, region, or substance that has an affinity for water.
"The terminal hydroxyl group acts as the hydrophile, drawing the molecule toward the surrounding water."
"The charged amine group serves as the hydrophile in the detergent molecule."
"Engineers added a hydrophile to the coating so that it would adhere strongly to a wet surface."
The standard plural is used for multiple water-attracting groups, regions, or materials.
"The formulation combines two hydrophiles with a nonpolar tail."
A hydrophile literally means “water-lover”: it seeks out water through polar or charged chemical interactions.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of hydrophile
The English word was formed from Greek hydōr, meaning “water,” and philos, meaning “loving” or “dear.” The two elements also recur in related English words such as hydrogen, hydraulics, and philanthropy, reflecting the same ancient Greek roots.
Related word forms
How hydrophile is actually used
Chiefly used in chemistry, biochemistry, pharmaceuticals, and materials science. It is less common than the adjective hydrophilic.
Easily confused with hydrophile
A hydrophile is attracted to water, whereas a hydrophobe repels it.
A hydrophile is a noun naming a water-attracting group or material, while hydrophilic is the corresponding adjective.