We have found the following solution for: Fastball in slang crossword clue. This crossword clue was last seen on September 1 2023 Wall Street Journal Crossword puzzle. The solution we have for Fastball in slang has a total of 3 letters. Please keep in mind that same crossword clues might have different answers and this is the reason why we give the number of letters for the following answer so that it matches the crossword clue you've got. If something is wrong or missing kindly let us know and we will be more than happy to help you out. For older puzzles and more answers we recommend you to visit our Wall Street Journal Crossword Answers page.

Definition

•	An aeriform fluid; -- a term used at first by chemists as synonymous with air, but since restricted to fluids supposed to be permanently elastic, as oxygen, hydrogen, etc., in distinction from vapors, as steam, which become liquid on a reduction of temperature. In present usage, since all of the supposed permanent gases have been liquified by cold and pressure, the term has resumed nearly its original signification, and is applied to any substance in the elastic or aeriform state.
•	A complex mixture of gases, of which the most important constituents are marsh gas, olefiant gas, and hydrogen, artificially produced by the destructive distillation of gas coal, or sometimes of peat, wood, oil, resin, etc. It gives a brilliant light when burned, and is the common gas used for illuminating purposes.
•	Laughing gas.
•	Any irrespirable aeriform fluid.

Answer

Definition

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