Dictionary > Metal


1. (Science: chemistry) An elementary substance, as sodium, calcium, or copper, whose oxide or hydroxide has basic rather than acid properties, as contrasted with the nonmetals, or metalloids. No sharp line can be drawn between the metals and nonmetals, and certain elements partake of both acid and basic qualities, as chromium, manganese, bismuth, etc.
Popularly, the name is applied to certain hard, fusible metals, as gold, silver, copper, iron, tin, lead, zinc, nickel, etc, and also to the mixed metals, or metallic alloys, as brass, bronze, steel, bell metal, etc.
2. Ore from which a metal is derived; so called by miners.
3. A mine from which ores are taken. Slaves . . . And persons condemned to metals. (Jer. Taylor)
4. The substance of which anything is made; material; hence, constitutional disposition; character; temper. Not till god make men of some other metal than earth. (Shak)
5. Courage; spirit; mettle. See mettle.
The allusion is to the temper of the metal of a sword blade.
6. The broken stone used in macadamizing roads and ballasting railroads.
7. The effective power or calibre of guns carried by a vessel of war.
8. Glass in a state of fusion.
9. The rails of a railroad.
(Science: mathematics) base metal, an alloy resembling brass, consisting of three parts of copper to one of zinc; also called prince Rupert’s metal.
Origin: f. Metal, L. Metallum metal, mine, gr. Mine; cf. Gr. To search after. Cf. Mettle, Medal.

You will also like...

Darwin's Finches - Natural Selection
Darwin and Natural Selection

This tutorial investigates the genetic diversity in more detail. It also delineates how certain alleles are favored over..

Origins of Life on Earth
Origins of Life on Earth

Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..

Running Water Freshwater Communities

This tutorial introduces flowing water communities, which bring new and dithering factors into the equation for possible..

Freshwater Ecology
Freshwater Ecology

Freshwater ecology focuses on the relations of aquatic organisms to their freshwater habitats. There are two forms of co..

Still Water Community Plants
Still Water Community Plants

This tutorial looks at the adaptations of freshwater plants for them to thrive in still water habitats. Familiarize your..

Human Reproduction
Human Reproduction

Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..