from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. any cation derived by the addition of a proton to the hydride of any element of the nitrogen, chalcogen or halogen families
- n. any organic derivative of these compounds
- n. the bound pair of a particle and its antiparticle
from The Century Dictionary and Cyclopedia
- n. In chem., a termination given to the names of compound radicals which are analogous in structure and chemical function to ammonium, NH4, as phosphonium, PH4, or tetramethylphosphonium, P (CH3)4.
Sorry, no etymologies found.
The concept of superelectrophiles thus emerged from my previous studies on superacidic carbocation and onium ion systems.
Examples include onium and carboxonium ions, acyl cations, halonium, azonium, carbozonium ions, even certain substituted carbocations and the like.
More recently the concept of the "at" - complexes as a counterpart to the "onium" complexes has led to the development of a new chemistry from which have come the sodium tetra phenylborates.
Related: Swine Flu is the top related story about pandemic-onium being spread via Twitter.
r & figillum noftrum in noftri confenfus tefti - onium prefentibus iimiliter eft appenfum.