1. The act or procedure of becoming different.
2. A condition resulting from a modification.
3. An event that occurs when something passes from one condition or phase to a another one.

A process of rock changes whereby certain minerals in a rock are changed into clay minerals: The students learned about argillic alteration that can take place when specific solid homogeneous inorganic substances are turned into minerals found in clay.

The dangers of alcohol to the brain and bodily functions.

Greek: Hygeia (goddess)
Latin: (no equivalent)

Various spellings: Hygeia, Hygea, Hygia; personification of health and healthy. We now have the derived word hygiene, the science of health, pertaining to health, healthful, living well; the science that deals with the upkeep of health; system of principles or rules for preserving and/or promoting health.