ion
ion
Definition
ion (ī′ən, -än′)
noun
an electrically charged atom or group of atoms, the electrical charge of which results when a neutral atom or group of atoms loses or gains one or more electrons during chemical reactions, by the action of certain forms of radiant energy, etc.: the loss of electrons results in a positively charged ion (cation), the gain of electrons in a negatively charged ion (anion)
Etymology: arbitrary use (by Michael Faraday) of Gr ion, neut. of iōn, prp. of ienai, to go < IE base *wei-, to go, chase after > L via, way
ion
Synonyms
ion
Telecom Definition
An atom or group of atoms that has acquired a positive (+) or negative (
ion
Usage Examples
Converse of object
- oxidize: Will acidified potassium dichromate(VI ) oxidize chloride ions to chlorine?
- dissolve: The particles are on average, 5 microns in diameter and contain dissolved metal ions.
Adjective modifier
- 2+: This is best shown in the fact that Sn 2+ ions in solution are good reducing agents.
- 3+: Why, then, does aluminum form Al 3+ ions?
- hydrated: Group may be used for this job, and the first step is to prepare a PDB file for the hydrated ion.
- Ca: Na + and Ca 2+ ions can destroy the low density structuring in a cooperative manner.
- negative: Negative ions Negative ions are bigger than the atoms they come from.
- inorganic: Carbon dioxide and inorganic ions are thus made available for re-use.
Modifies a noun
- implantation: For example, ion beam implantation is used to produce nanoparticle clusters in a commercial program.
- beam: A second small grant was awarded by EPSRC to support additional ion beam hours required to complete the project.
- microprobe: Some of the most detailed analyzes are undertaken with the ion microprobe.
- channel: The ion channels are either open or closed; there is no half-way position.
- spectrometer: Microstructural changes and surface disruption around the crater were investigated using a secondary ion mass spectrometer ( SIMS ).
- trap: Abstract We investigate theoretically the speed limit of quantum gate operations for ion trap quantum information processors.
Noun used with modifier
- hydroxide: There must have been some slight reaction with the water to produce hydroxide ions in solution.
- hydrogen: The copper might react with the hydrogen ions or with the nitrate ions.
- chloride: In the process, the chlorine is reduced to chloride ions.
- lithium: Lithium ion battery life around 30 seconds of talktime, or 3 minutes on standby.
- ammonium: An ammonium ion is formed, together with an amine.
- potassium: A voltage across the channel acted like a gate voltage in a conventional transistor, shutting off the flow of potassium ions.
Browse dictionary entries near ion
- iolite
- iodous
- iodopsin
- iodoprotein
- iodometry
- iodoform
- iodo-
- iodized salt
- iodize
- iodism
- ion engine
- ion exchange
- -ion
- Ionesco
- Ionia
- Ionian
- Ionian Islands
- Ionian Sea
- ionic
- ionic bond
