iris-out

[ ahy-ris-out ]
/ ˈaɪ rɪsˈaʊt /

noun Movies, Television.

the gradual disappearance of an image or scene through a contracting circle.

Origin of iris-out

First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019