What is another word for were in operation?
Pronunciation: [wɜːɹ ɪn ˌɒpəɹˈe͡ɪʃən] (IPA) 
There are several synonyms that can be used in place of "were in operation" depending on the context. One could use "were functioning," "were running," "were operating," "were active," or "were in use." These phrases all indicate that something was operating or running during a specific period of time. They can be used in various contexts such as when referring to businesses, machines, or systems. For example, "The factory machines were running efficiently all day" or "The computer system was in use during the testing phase." Using synonyms can help improve the flow of writing and avoid repetition.
