halide
nounUK /ˈheɪ.laɪd/ · US /ˈhæl.aɪd/
Etymology From hal(ogen) + -ide.
1
Chemistry, Inorganic chemistry, Natural sciences, Physical sciences Any salt of any halogen acid (such as hydrochloric acid, hydrofluoric acid, or hydroiodic acid).
- sulfur halides such as disulfur dichloride
2
Chemistry, Inorganic chemistry, Natural sciences, Physical sciences Especially Such a salt with a single halogen atom.
- Potassium iodide is a halide.
3
The anionic form of a halogen atom (a group 17 element).
- Iodide is a halide.
4
Informal A metal halide lamp.
- One word on halides; They may be more expensive to set up, but they are far brighter than tubes, illuminate a larger growing area, and are much cheaper to run in the long run in terms of the light ouput you get/ unit of electricity consumed.. also an advantage for taller trees, or anything over 10 " tall..1995 September 18, ISLAM, YASSIR, “grow lights..”, in rec.arts.bonsai (Usenet), archived from the original on 01 Jul 2026:
- Yes, heating is a problem with basically any reef set-up in the summer in a non-ACed house, and halides make it worse.1996 November 12, Sanjay Mani, “Jeff Pfohl's Web Page”, in rec.aquaria.marine.reefs (Usenet), archived from the original on 01 Jul 2026:
1 more example
- I've also heard blue lights for an hour then kick on the halides for 6-8 hours then blue lights (actinic) again for an hour then the moon lights/no lights.2006 June 10, Bryan Garner, “setting timing on the new lights”, in rec.aquaria.marine.reefs (Usenet), archived from the original on 01 Jul 2026: