nonionic
Definition
Adjective 1. Not ionic; not composed of ions or not involving ions. Describes a substance or compound whose molecules do not dissociate into charged particles (ions) in a solution. 2. Not converted into ions. Describes a substance that remains in a neutral molecular form and does not acquire an electrical charge.
Usage and Examples
- As an adjective modifying a noun:
- Nonionic detergents are often gentler on fabrics than ionic ones.
- The chemist synthesized a nonionic surfactant for the new formulation.
- This compound remains nonionic even when dissolved in water.
Advanced Usage
- Scientific and Technical Contexts: The term is primarily used in chemistry, biology, and materials science to describe the charge characteristics of molecules, especially surfactants, polymers, and contrast agents.
- Nonionic polymers are used in drug delivery systems because of their stability.
- In medical imaging, a nonionic contrast medium is often preferred for its lower osmolality.
Variants and Related Words
- Non-ionic: An alternative hyphenated spelling of the same word.
- Nonionically (adverb): In a nonionic manner.
- The compound behaves nonionically in this solvent.
- Ionic (adjective): The direct antonym, meaning composed of or involving ions.
Synonyms
- Uncharged
- Non-electrolytic (in specific contexts)
- Molecular (in contrast to ionic)
Antonyms
- Ionic
- Charged
- Electrolytic
Adjective
-
not ionic
-
a nonionic substance
-
-
not converted into ions
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