Princeton's WordNet (2.25 / 4 votes) Rate this definition: unit of measurement, unit (noun). any division of quantity accepted as a standard of measurement or exchange. the dollar is the United States unit of currency; a unit of wheat is a bushel; change per unit volume. unit (noun).nit. 1. Any military element whose structure is prescribed by competent authority, such as a table of organization and equipment; specifically, part of an organization. 2. An organization title of a subdivision of a group in a task force.
Oxygen can be found on most of the earth and is needed by many living beings. Our atmosphere is composed of about 20% oxygen. The element oxygen (O2) is found in water (H2O),â¦ which is made up of 2 parts Hydrogen and 1 part oxygen. It is also found in rust and metal ores, as well as in many different minerals. Another place is anywhere there are green plants or trees.
Just kidding. Actually they sort of are... A water molecule is made up of matter. It contains atoms. There are two hydrogen atoms and one oxygen atom bonded together. Inside these atoms are protons, neutrons and electrons. 10 protons, 8 neutrons and 10 electrons to be exact, assuming it is not heavy water.