(photography) A circular electronic flash that fits around a camera lens.

The process whereby objects are frozen in a few hours by subjecting them to cryogenic temperatures, or through direct contact with liquid nitrogen.

plural of moulding flash

To undergo flashover.

plural of flash over

(manufacturing) Excess material left around the edge of a mould, which must usually be removed.

plural of flash sale

plural of molding flash

(business) A sale of merchandise where the prices are greatly reduced, but lasting for only a short period of time.

(firearms) A small receptacle for priming powder, found next to the touch hole on muzzleloading guns.