IPA: /ɪnˈvaɪərn/
KK: /ɪnˈvaɪərn/
To encircle or surround something completely.
The castle was environed by a deep moat.
Past: environed
Past Participle: environed
Environ → It is formed from "en-" (meaning to cause to be in) and "viron" (from Latin "viridis", meaning green or fresh). The word "environ" means to surround or encircle, often in the context of nature or the environment.
Think of being 'surrounded' ('en-') by 'green' ('viron') spaces, which helps you remember that 'environ' relates to the surroundings or environment.