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halogen
[ hal-uh-juhn, -jen, hey-luh- ]
noun
- any of the electronegative elements, fluorine, chlorine, iodine, bromine, and astatine, that form binary salts by direct union with metals.
halogen
/ ˈhæləˌdʒɛn; həˈlɒdʒɪnəs /
noun
- any of the chemical elements fluorine, chlorine, bromine, iodine, and astatine. They are all monovalent and readily form negative ions
halogen
/ hăl′ə-jən /
- Any of a group of five nonmetallic elements with similar properties. The halogens are fluorine, chlorine, bromine, iodine, and astatine. Because they are missing an electron from their outermost shell, they react readily with most metals to form salts.
- See Periodic Table
Derived Forms
- halogenous, adjective
- ˈhalogenˌoid, adjective
Other Words From
- ha·log·e·nous [ha-, loj, -, uh, -n, uh, s], adjective
Word History and Origins
Origin of halogen1
Compare Meanings
How does halogen compare to similar and commonly confused words? Explore the most common comparisons:
Example Sentences
For decades, halogens had been destroying the high-flying ozone.
Compared to incandescent bulbs or halogen lighting, LEDs use a small amount of electricity.
They’re halogen bulb— just like what came stock on the Ranger—only a little higher quality.
That’s roughly equal to a 300W halogen floodlight, which is plenty for outdoor security use.
New, long-lasting LED bulbs and smartphone controls have carried traditional halogen floodlights into the 21st century, while additional built-in cameras and alarms add a new layer to create security lighting.
The light of halogen lamps is slightly more “whiteish” than incandescent lamps.
There is a group of closely allied elements to which the name halogen (salt-producer) has been given.
Compounds containing oxides and fluorides, &c., do not lend themselves to the method of determining the halogen by difference.
We may, in fact, consider that the descriptive study of the various halogen compounds dates from about this time.
The same absorbent quantitatively takes up any halogen and sulphur which may be present.
The same as Method 1, except that after ignition of the saponified mixture the halogen was determined by weighing as silver iodid.
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