Noun

(en-noun)

The act, process or ability of concentrating; the process of becoming concentrated, or the state of being concentrated.

# The direction of attention to a specific object.

# The act, process or product of reducing the volume of a liquid, as by evaporation.

# The act or process of removing the dress of ore and of reducing the valuable part to smaller compass, as by currents of air or water.

A field or course of study on which one focuses, especially as a student in a college or university.

The proportion of a substance in a whole.

* {{quote-magazine, year=2013, month=July-August, author= Philip J. Bushnell, magazine=(American Scientist)

, title= Solvents, Ethanol, Car Crashes & Tolerance , passage=Surprisingly, this analysis revealed that acute exposure to solvent vapors at concentrations below those associated with long-term effects appears to increase the risk of a fatal automobile accident. Furthermore, this increase in risk is comparable to the risk of death from leukemia after long-term exposure to benzene, another solvent, which has the well-known property of causing this type of cancer.}}

# (chemistry) The amount of solute in a solution measured in suitable units (e.g., parts per million (ppm))

The matching game pelmanism.

Noun

(en noun)

The set of apartments within which the cardinals of the Roman Catholic Church are continuously secluded while engaged in choosing a pope.

The group of Roman Catholic cardinals locked in a conclave until they elect a new pope; the body of cardinals.

* (Robert South)

It was said a cardinal, by reason of his apparent likelihood to step into St. Peter's chair, that in two conclaves he went in pope and came out again cardinal.

A private meeting; a close or secret assembly.

* (Thomas Babington Macaulay)

The verdicts pronounced by this conclave (Johnson's Club) on new books, were speedily known over all London.