This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

Possessing or forming a vista or vistas.

"Other lanterns at intervals serve but to bring out somewhat the obscurer bays which, like small confessionals or side-chapels in a cathedral, branch from the long dim-vistaed broad aisle between the two batteries of that covered tier."