step flashing
(roofing) Individual pieces of sheet metal material used to flash walls, around chimneys, dormers and such projections along the slope of a roof. Individual pieces are overlapped and stepped up the vertical wall.
Of or relating to the nuclear physicist Enrico Fermi (1901–1954).
(chemistry) Any cation, of general formula X³⁺, formed by the removal of three electrons from a neutral species
plural of hum bow
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