An inhabitant of Earth, as opposed to one of heaven. [from 16th c.]

(chemistry) Any of a group of seventeen soft, lustrous, sometimes magnetic metals that form trivalent salts; they include the lanthanides plus yttrium, scandium, thorium and sometimes zirconium.

(chemistry) Any of the naturally occurring oxides of the lanthanide metals; they are widely distributed in relatively small concentrations and are used in glassmaking, ceramic glazes etc.

A red soil found in tropical areas, containing oxidized iron.

Alternative form of Middle Earth: (archaic) the Earth; (Norse mythology) Midgard. / (fiction) Alternative letter-case form of Middle-earth: the setting of the Lord of the Rings mythos.

The United Nations Conference on Environment and Development held in Rio de Janeiro in 1992.

The third planet of the Solar System; the world upon which humans live. / The personification of the Earth or earth, (chiefly) as a fertile woman or (religion) goddess.

(ceramics, often attributive) An opaque, semi-porous ceramic made from clay and other compounds.

Relating to the earth or this world, as opposed to heaven; terrestrial. / (negative, informal) Used for emphasis / (obsolete) Made of earth; earthy.

(collective or in the plural) That which is of the earth or earthly; a terrestrial being. / (UK, colloquial) A slightest chance (of success etc.) or idea (about something).