An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

1) The act of concentrating or the state of being concentrated.
2) Chemistry: A measure of the amount of dissolved substance contained per unit of volume in a solution.

Verbal noun from → concentrate.

Of a gas included in the composition of a → gas mixture, the ratio of the number of moles of this gas to the total number of moles of all the gases in the mixture. Same as mole fraction and mole-fraction concentration.

→ molar; → concentration.

Same as the → Shapley supercluster.

→ Shapley's wing; → concentration

of a gas included in the composition of a → gas mixture, the ratio of mass of this gas to the mass of the whole mixture. Same as → weight fraction and → weight-fraction concentration.

→ weight; → concentration.

Same as → weight concentration.

→ weight; → fraction; → concentration.