process
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introducedverb
/ˌɪntɹəˈdjuːst/ /ˌɪntɹəˈduːst/
To add (something) to a system, a mixture, or a container.
"Various pollutants were introduced into the atmosphere."

switchovernoun
/ˈswɪtʃˌoʊvər/ /ˈswɪtʃˌoʊvɚ/
A complete change or switch from one state, system or course of action to another.
"After the digital switchover, analogue television broadcasts were no longer transmitted."

















