Amgylchedd, n. circumference
Amgylchiad, n. a surrounding
Amgylchiadol, a. circumscribing
Amgylchu, v. to surround
Amglchyn, n. circumferentor
Amgylchyniad, n. encompassing
Amgylchynu, v. to surround
Amgylchynol, a. encompassing
Amgylchynwr, n. circumscriber
Amgyaniwair, v. to hover round