sectile

It is soft, sectile, readily scratched by the nail; its fracture is vitreous and conchoidal.

Roman mosaic-work (commonly in the tessellated style and not the opus sectile) has been unearthed in many parts of the Peninsula.

There were two kinds of leek (porrum:) porrum sectile (chives) and porrum capitatum.

And the earlier its date the more surely was it a mosaic, not in the form of tesserae, but in the manner known as “opus sectile.”

The Tablinum in the house of the vestals and the temple of Jupiter on the Capitol were paved with sectile mosaic.