(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.

(chemistry) A systematic name for an element, derived from the digits of its atomic number to which the suffix -(i)um is appended; normally only used for transuranic elements before or for a short period after they have been created, after which they will be given a non-systematic name.

(physics) the generation of static electricity by friction between different materials

A common festive activity held at Easter, where Easter eggs are hidden outdoors (or indoors if in bad weather) for children to run around and find; this may also be a contest to see who can collect the most eggs.

(now colloquial) Them (now only in unstressed position following a consonant).

(physics, fluid mechanics) The reduction in fluid pressure that results when a fluid flows through a constriction.

(alternative medicine) The spiritual or etheric energy produced by an individual living being.

(physics) of an elementary particle, or the equivalent electromagnetic radiation, having an energy greater than a hundred thousand electron volts

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

The energy possessed by an object because of its position (in a gravitational or electric field), or its condition (as a stretched or compressed spring, as a chemical reactant, or by having rest mass).