unreactive
Definition
- Adjective:
- Not tending to react to stimulation: Describes something that does not respond or change when acted upon by an external force or influence.
- (Chemistry) Not reacting chemically: Describes a substance that does not undergo a chemical reaction when combined with other specific substances under given conditions.
Usage Examples
General (Not tending to react):
- The patient was unusually unreactive to the sensory tests.
- The material is unreactive to changes in humidity.
Chemistry (Not reacting chemically):
- Nitrogen gas is relatively unreactive under standard conditions.
- Gold is prized for jewelry because it is unreactive and does not tarnish.
Advanced Usage
Scientific Context: Often used to describe inert gases, noble metals, or stable compounds.
- Helium is an unreactive element, making it safe for use in balloons.
Figurative Use: Can describe a person's demeanor or a system's lack of response.
- His unreactive demeanor in the crisis was both calming and frustrating.
Variants and Related Words
- Unreactive is the standard adjective form.
- Unreactivity (noun, less common): The state or quality of being unreactive.
- Inert (adj): A close synonym, especially in chemistry, meaning lacking the ability or strength to move or react.
- Nonreactive (adj): Often used interchangeably with "unreactive," particularly in medical and chemical contexts (e.g., a nonreactive test result).
Synonyms
- Inert
- Nonreactive
- Stable (in a chemical context)
- Unresponsive
Antonyms
- Reactive
- Responsive
- Volatile (in a chemical/figurative context)
- Labile (in a chemical context)
Notes on Meaning
The meaning of "unreactive" is highly dependent on context: - In general language, it describes a lack of response to stimuli. - In chemistry, it is a technical term describing chemical stability and resistance to reaction. A substance can be unreactive with some chemicals but reactive with others.
Adjective
-
not tending to react to stimulation
-
(chemistry) not reacting chemically
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