desorb
Very low / SpecializedTechnical / Scientific
Definition
Meaning
To release or remove (a substance) from a surface on which it is adsorbed or absorbed.
In technical contexts, to cause the release of atoms, ions, or molecules from the surface of a solid or liquid into a surrounding medium. Also used metaphorically for the release or removal of anything that has been 'stuck' to a surface or concept.
Linguistics
Semantic Notes
The process is the reverse of adsorption or absorption. Most commonly used in chemistry, physics, and environmental science. Often implies a deliberate or induced process, not a passive one.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or usage. The word is purely technical and used identically.
Connotations
Neutral scientific term in both varieties.
Frequency
Equally rare and specialized in both regions.
Vocabulary
Collocations
Grammar
Valency Patterns
[Substance] desorbs from [Surface]To desorb [Substance] from [Surface] (transitive)The [Surface] desorbs [Substance] (less common)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “None”
Usage
Context Usage
Business
Not used.
Academic
Used in chemistry, physics, materials science, and environmental engineering papers and textbooks.
Everyday
Virtually never used.
Technical
The primary domain of use; describes processes in catalysis, gas storage, chromatography, and surface cleaning.
Examples
By Part of Speech
verb
British English
- The contaminants will slowly desorb from the sediment over time.
- Heating the material helps to desorb the trapped gases.
American English
- The activated carbon desorbed the solvent when heated.
- Researchers studied how quickly the compound desorbs from the surface.
adverb
British English
- The molecules were described as being loosely and reversibly bound, desorbing rapidly.
American English
- The contaminant was found to desorb relatively easily from the soil particles.
adjective
British English
- The desorbed gas was collected for analysis.
American English
- They measured the concentration of the desorbed molecules.
Examples
By CEFR Level
- The cleaning process involves heating the filter to desorb impurities.
- In chromatography, the sample components desorb at different rates.
- Under vacuum conditions, the adsorbed water molecules began to desorb from the metal surface.
- The study's aim was to quantify the energy required to desorb a monolayer of nitrogen from the catalyst.
Learning
Memory Aids
Mnemonic
Think 'DE-SORB' – 'DE' means reverse, 'SORB' relates to soaking up. So, to reverse the soaking-up process.
Conceptual Metaphor
Releasing a grip; letting go of something that was stuck.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Not to be confused with 'desorb' meaning 'to absorb again'. 'Desorb' is 'десорбировать(ся)' or 'удалять с поверхности'.
- Do not confuse with 'абсорбировать' (absorb) or 'адсорбировать' (adsorb). The 'de-' prefix is crucial.
Common Mistakes
- Confusing 'desorb' with 'absorb' or 'adsorb'.
- Using it intransitively when a transitive construction is needed: 'The filter desorbs the toxins' vs. 'The toxins desorb from the filter'.
- Mispronouncing it /ˈdiːsɔːrb/ (DEE-sorb).
Practice
Quiz
What is the opposite process of 'desorption'?
FAQ
Frequently Asked Questions
'Absorb' means to soak up or take in a substance throughout its volume (like a sponge). 'Desorb' is the reverse process, meaning to release a substance from a surface or material where it was held.
Almost never. It is a highly specialized term confined to scientific and technical fields like chemistry, physics, and environmental engineering.
Yes. Transitively: 'The heat desorbs the gas.' Intransitively: 'The gas desorbs from the surface.'
The noun form is 'desorption' (e.g., 'the desorption of gases').