a·gen·cy 
(ājən-sē)
(ājən-sē)n. pl. a·gen·cies
1. The condition of being in action; operation.
2. The means or mode of acting; instrumentality.
3.
a. A business with agents that negotiate deals for clients: a talent agency; a real estate agency.
b. An advertising or public relations firm.
4. An administrative division of a government or international body.
[Medieval Latin agentia, from Latin agēns, agent-, present participle of agere, to do; see AGENT.]
- magnetic field
- magnetic field strength
- magnetic flux
- magnetic flux density
- magnetic force
- magnetic head
- magnetic inclination
- magnetic induction
- magnetic intensity
- magnetic levitation
- magnetic lines of force
- magnetic meridian
- magnetic mine
- magnetic moment
- magnetic monopole
- magnetic needle
- magnetic north
- magnetic north pole
- magnetic permeability
- magnetic pole
- magnetic potential
- magnetic pyrites
- magnetic quantum number
- magnetic recording
- magnetic resonance