MURAL a.
Resembling a wall; perpendicular or steep; as, a mural precipice. Mural circle (Astron.), a graduated circle, in the plane of the meridian, attached permanently to a perpendicular wall; -- used for measuring arcs of the meridian. See Circle, n., 3. -- Mural crown (Rom. Antiq.), a golden crown, or circle of gold indent…
NORTHERN a.
In a direction toward the north; as, to steer a northern course; coming from the north; as, a northern wind. Northern diver. (Zoöl.) See Loon. -- Northern lights. See Aurora borealis, under Aurora. -- Northern spy (Bot.), an excellent American apple, of a yellowish color, marked with red.
OPEN a.
ce; esp., a kind of reverberatory furnace in which the fuel is gas, used in manufacturing steel. -- Open-hearth process (Steel Manuf.), a process by which melted cast iron is converted into steel by the addition of wrought iron, or iron ore and manganese, and by exposure to heat in an open-hearth furnace; -- also call…
PALETTE n.
A breastplate for a breast drill. Palette knife, a knife with a very flexible steel blade and no cutting edge, rounded at the end, used by painters to mix colors on the grinding slab or palette. -- To set the palette (Paint.), to lay upon it the required pigments in a certain order, according to the intended use of th…