Full-bleed

Also called: edge to edge, full-width image, bleed, full-screen section.

A picture, video or section that runs to the very edges of the screen, with no margin around it, while the text stays in a narrow column. The word comes from printing, where an image "bleeds" off the page.

Full-bleed means the picture runs to the very edges of the screen, with no margin around it.

Contained

Say it in a prompt

Keep the article text in a 680px column, but make the photos full-bleed: 100vw wide, no border radius and no side margin, 60vh tall with object-fit: cover.

Seen on

The New York Times: Snow Fall: Full-screen video sections fill the whole width of the window between the text.

You might describe it as

picture that goes all the way to the edges
image wider than the text with no margins
photo that touches both sides of the screen

Not to be confused with

Hero
Full-bleed is about going edge to edge, anywhere on the page; a hero is the first section at the top, which may or may not be full-bleed.