For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
   COMMISSION. The Public Utilities Commis-sion of the state.
   PERSON. Individuals, firms, corporations, partnerships and their agents and employees.
   POLES, OVERHEAD WIRES AND ASSOCIATED OVERHEAD STRUCTURES. Poles, towers, supports, wires, conductors, guys, stubs, platforms, crossarms, braces, transformers, insulators, cutouts, switches, communication circuits, appliances, attachments and appurtenances located aboveground within a district and used or useful in supplying electric, communication or similar or associated service.
   UNDERGROUND UTILITY DISTRICT or DISTRICT. That area in the city within which poles, overhead wires, and associated overhead structures are prohibited as such area is described in a resolution adopted pursuant to the provisions of § 53.04.
   UTILITY. All persons or entities supplying electric, communication or similar or associated service by means of electrical materials or devices.
('81 Code, § 13.16.010)