The Collaborative International Dictionary
Monatomic \Mon`a*tom"ic\, adv. [Mon- + atomic.] (Chem.)
Consisting of, or containing, one atom; as, the molecule of mercury is monatomic.
Having the equivalence or replacing power of an atom of hydrogen; univalent; as, the methyl radical is monatomic.
Wiktionary
a. (context chemistry English) Of an element, consisting of a single atom in the molecule, for example, the noble gases. Note: Strictly speaking, a molecule has at least two atoms.
WordNet
adj. of or relating to an element consisting of a single atom; "helium and argon are monatomic gases" [syn: monoatomic]
Usage examples of "monatomic".
Eons passed, and the matter dissipated in a cloud of monatomic hydrogen, evenly dispersed through a universe ten light-years in diameter.
Luna, spacecraft exhausts sprayed monatomic oxygen over hundreds of square kilometers.
Fine, nearly monatomic dust spews from the top of the drill head, a cloud that rises a hundred meters into the air and drifts slowly westward.
At minimum output the nose cannon on the patrol boat drilled neatly into the iron, sending out clouds of monatomic gas.
The molecular unbinder is a neat little tool that reduces the binding energy between molecules so that they turn to monatomic powder and slough away.
The military used SniperEyes, with enormously extended focal ranges and multiple grades of monatomic lasers to assess wind speed, air density and so forth.
Chmeee dealt with that: the doors sprayed away from the disintegrator beam in a cloud of monatomic dust.
Do you have any idea how dangerous it is to vent monatomic antimatter?
In 1984, laboratory tests in both Arizona and Texas showed that rapid cooling of monatomic powders could raise their tested weight fourfold.
Squibb has reported success with monatomic ruthenium to correct cancer cells.
Commander Gray originally challenged me to trace historical references for these strange monatomic powders.
At first the effects were invisible from orbit, though on the ground the rocks exploded as suddenly charged atoms repelled each other with violent force, fountaining monatomic dust hundreds of meters, and then kilometers high.
Monatomic hydrogen, however, is extremely unstable and reacts promptly to form diatomic hydrogen molecules, H2.
Note that this excludes the diatomic gases N2 and O2 that form the bulk of the atmosphere (78 and 20 percent respectively), and also the monatomic traces, argon and neon.
With a little luck, he could ignite the superheated and compressed monatomic hydrogen directly ahead of the projectile, and let the multimegaton explosion flip it up or down off the ballistic trajectory the humans had launched it on.