hydrophilic
C1Technical/Scientific
Definition
Meaning
Having a strong affinity for water; readily absorbing or mixing with water.
Used metaphorically to describe people, organizations, or things that are drawn to, favour, or thrive in contexts involving water or fluidity (e.g., a company being hydrophilic in its approach to digital media). In a social sense, can describe someone who enjoys being in or near water.
Linguistics
Semantic Notes
Primarily used in chemistry, biology, and materials science. Often contrasted directly with 'hydrophobic'. Describes a physical property, not a temporary state. Can be used both attributively (before a noun) and predicatively (after a linking verb).
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or spelling. Pronunciation differs slightly (see IPA).
Connotations
Identical technical connotations in both varieties.
Frequency
Equally low-frequency in everyday speech but standard in scientific and technical registers in both the UK and US.
Vocabulary
Collocations
Grammar
Valency Patterns
be + hydrophilichydrophilic + nounhydrophilic to + noun (e.g., water)make + noun + hydrophilicVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Rare. Might appear in marketing or R&D for products like cosmetics, pharmaceuticals, or advanced materials (e.g., 'Our new fabric has a hydrophilic inner layer').
Academic
Very common in chemistry, biochemistry, materials science, and physics papers to describe molecular interactions, surface properties, or material behaviour.
Everyday
Very rare. Might be encountered in educational contexts, science documentaries, or instructions for certain products (e.g., contact lens solutions).
Technical
The primary register. Used in lab reports, engineering specifications, and scientific descriptions to denote a material's interaction with water.
Examples
By Part of Speech
adverb
British English
- The compound behaved hydrophilically during the experiment.
- The fabric was treated to react more hydrophilically.
American English
- The nanoparticles were functionalized to act hydrophilically.
- The surface interacts hydrophilically with aqueous solutions.
adjective
British English
- The chemist developed a new hydrophilic coating for medical implants.
- This side of the membrane is hydrophilic, attracting water molecules.
American English
- Researchers engineered a hydrophilic polymer for the drug delivery system.
- The material's hydrophilic surface prevents fogging.
Examples
By CEFR Level
- Cotton is a hydrophilic fabric, which is why it absorbs sweat.
- The sponge is hydrophilic, so it soaks up water quickly.
- Scientists are designing hydrophilic surfaces that prevent ice formation.
- The hydrophilic end of the soap molecule attaches to water.
- The hydrogel's hydrophilic network can retain water up to 99% of its weight.
- Amphiphilic molecules contain both hydrophilic and hydrophobic regions, crucial for cell membrane structure.
Learning
Memory Aids
Mnemonic
Break it down: 'Hydro-' means water (like in hydroelectric) and '-philic' comes from the Greek 'philos' meaning loving or friendly. So, hydrophilic = water-loving.
Conceptual Metaphor
AFFINITY IS ATTRACTION / WATER IS A FRIEND (The substance is drawn to water as if to a friend).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'гигроскопичный' (hygroscopic), which specifically relates to absorbing moisture from the air.
- The direct translation 'гидрофильный' is accurate and used in scientific Russian.
- Avoid the false friend 'гидравлический' (hydraulic), which is unrelated.
Common Mistakes
- Confusing 'hydrophilic' with 'hygroscopic'. All hygroscopic materials are hydrophilic, but not all hydrophilic materials are hygroscopic (which implies absorption from the air).
- Using it to mean 'water-soluble'. A substance can be hydrophilic (attracted to water) without fully dissolving (e.g., gelatin).
- Misspelling as 'hydrophillic' (double 'l').
Practice
Quiz
In a detergent molecule, the hydrophilic head is responsible for:
FAQ
Frequently Asked Questions
Not exactly. 'Hydrophilic' means having an affinity for water, which often leads to solubility, but not always. Some hydrophilic materials (like certain gels or fibres) absorb water and swell without fully dissolving.
Yes, but only in a metaphorical or humorous sense. For example, 'He's so hydrophilic, he spends every weekend at the lake.' This is not a standard technical usage.
The direct and most common antonym is 'hydrophobic', meaning water-repelling. Other related antonyms include 'water-resistant' or 'water-repellent'.
It's fundamental. Cell membranes are made of phospholipids with hydrophilic heads and hydrophobic tails, creating a bilayer. This structure controls what enters and leaves the cell. Also, proteins fold so that hydrophilic parts often face the watery environment inside or outside the cell.