anergy

From New Latin anergia, from Greek an- ("not"; "without") + ergon ("work").

anergy (countable and uncountable, plural anergies)

1. (physics) Dilute or disorganized energy, which cannot be transformed into work.
   • The maximum fraction of an energy form which (in a reversible process) can be transformed into work is called exergy. The remaining part is called anergy, and this corresponds to the waste heat.[1]
   • To be useful, internal energy has to be concentrated. The more dilute or disorganized the internal energy, the less useful it is ...[2]
2. (pathology) Deficiency of energy.
3. (immunology) Lack of immunity to an antigen.

• bound energy

• exergy
• free energy
• synergy

• anergic

• Graney, grayen, raygne