OX
AK
pt
Ante-meridian and post meridian
The Russian Federation is abbreviated R.F.
MSGT= Master Sergeant
Read-Only-Memory
Glomerular filtration rate
The ounce = oz, from the old Italian word onza which is now spelt oncia
The abbreviation for "bijvoorbeeld," which is Dutch for "for example," is "bv." This abbreviation is commonly used in both written and spoken Dutch to indicate examples.
The possessive form for the noun oxygen is oxygen's.
The smallest particle of oxygen that behaves like oxygen is an oxygen molecule, which consists of two oxygen atoms bonded together.
Oxygen is an element - the only thing that composes oxygen are oxygen atoms. Oxygen found naturally (molecular oxygen) is formed from two atoms of oxygen, O2.