Streets leading to the bridge have been graded and metalled over and are passable at all times.
Lumps of limestone with which roads are metalled in Northern India.
It was not metalled until 1859, and nearly all the buildings were frame.
The barn had a slate roof; the railings were new; the pathways had been metalled.
The Third, suddenly without the assistance of his anti-grav, crashed into the fence and dropped leadenly to the metalled surface.
There is no railway in the district, and only 29 m. of metalled road.
The road was a real road, metalled and embanked, with wooden bridges over the streams, and stone culverts to carry away the water.
The slipperiness of the metalled and paved roads in this part of Flanders increased my uneasiness.
The metalled road from Cawnpoor to Lucknow is covered almost with carts and vehicles of all kinds.
Most of the metalled or flint roads of Flanders had a ditch on either side, into which we took occasional headers.
mid-13c., from Old French metal "metal; material, substance, stuff" (12c.), from Latin metallum "metal; mine, quarry, mineral, what is got by mining," from Greek metallon "metal, ore" (senses only in post-classical texts; originally "mine, quarry, pit"), probably from metalleuein "to mine, to quarry," of unknown origin, but related somehow to metallan "to seek after." Cf. Greek metalleutes "a miner," metalleia "a searching for metals, mining."
late 14c., from metal (n.).
metal met·al (mět'l)
Any of a category of electropositive elements that usually reflect light, are generally good conductors of heat and electricity, and can be melted or fused, hammered into thin sheets, or drawn into wires. Typical metals form salts with nonmetals, basic oxides with oxygen, and alloys with one another.
An alloy of two or more metallic elements.
An object made of metal.
Our Living Language : Most metallic elements are lustrous or colorful solids that are good conductors of heat and electricity, and readily form ionic bonds with other elements. Many of their properties are due to the fact that their outermost electrons, called valence electrons, are not tightly bound to the nucleus. For instance, most metals form ionic bonds easily because they readily give up valence electrons to other atoms, thereby becoming positive ions (cations). The electrical conductivity of metals also stems from the relative freedom of valence electrons. In a substance composed of metals, the atoms are in a virtual "sea" of valence electrons that readily jump from atom to atom in the presence of an electric potential, creating electric current. With the exception of hydrogen, which behaves like a metal only at very high pressures, the elements that appear in the left-hand column of the Periodic Table are called alkali metals. Alkali metals, such as sodium and potassium, have only one electron in their outermost shell, and are chemically very reactive. (Hydrogen is exceptional in that, although it is highly reactive, its other metallic properties are manifest only at very high pressures.) Metals farther toward the right side of the Periodic Table, such as tin and lead, have more electrons in their outermost shell, and are not as reactive. The somewhat reactive elements that fall between the two extremes are the transition elements, such as iron, copper, tungsten, and silver. In most atoms, inner electron shells must be maximally occupied by electrons before an outer shell will accept electrons, but many transition elements have electron gaps in the shell just inside the valence shell. This configuration leads to a wide variety of available energy levels for electrons to move about in, so in the presence of electromagnetic radiation such as light, a variety of frequencies are readily emitted or absorbed. Thus transition metals tend to be very colorful, and each contributes different colors to different compounds.