1. Of a person: Skilled in or practically conversant with some particular art or subject. Also specifically in the official designations of certain ranks in the armed forces of the U.K. and U.S.
2. Belonging or relating to an art or arts; appropriate or peculiar to, or characteristic of, a particular art, science, profession, or occupation; also, of or pertaining to the mechanical arts and applied sciences generally.
3. According to a strict interpretation of rules or words.
4. Used to describe a type of security analysis based on past prices and volume levels as well as other market indicators.

"Jargon" refers to specialized technical terminology characteristic of a particular subject.

The achievable energy savings that might result from introducing the most energy-efficient technology at a given time, without taking into account the costs of introduction or the life of the equipment to be replaced.

Greek: Pallas Athena (goddess)
Latin: Minerva (goddess)

The goddess of wisdom, war, and weaving.

Symbols: the Aegis (a shield on which was fixed the head of Medusa, a woman with snakes instead of hair on her head, whose look turned beholders into stone)