(physiology) The chemical processes that occur within a living organism in order to maintain life. / (figuratively, by extension) The processes that maintain any dynamic system.

Characterised by or exhibiting a change in form or character.

(mineralogy) A rock that has been changed from its original form by subjection to heat and/or pressure.

A transformation, such as one performed by magic. / A noticeable change in character, appearance, function or condition.

The science of metals; their extraction from ores, purification and alloying, heat treatment, and working.

Of, relating to, or characteristic of metal. / Made of or containing metal. / (of a sound) Harsh, as if coming from two metals striking one another.

A metallic color.

An alloy of tin with copper and antimony, somewhat like pewter.

Of the metatarsus.

Any of the bones of the metatarsus.