The .env file extension is a found in the data files that served as a reference when Adobe programs like Acrobat and Illustrator used spell checking and other dictionary-related features. ENV files are dictionary files containing access and queries sent to the program every time a user attempts to search the meaning or correct the spelling a word.
Accompanied by .lex and .clx files, .env composed of listings of various words needed to verify the spelling of a certain text whenever the users compose. To be more specific, .env stands for the environment and this is a data file that gives the "environment" or meaning in the word in search or in check.
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