ad. Using a chemical reaction, process, or operation.
ad. According to the principles of chemistry.
the GNU version of the Collaborative International Dictionary of English
ad. According to chemical principles; by chemical process or operation.
The Century Dictionary and Cyclopedia
In a chemical manner; according to chemical principles; in a chemical sense; by a chemical process or operation: as, a chemically active substance; a surface chemically clean.
By alchemy or alchemical means or processes.
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