Rat urine can contain harmful diseases like leptospirosis. If you are cleaning up a small amount of urine, the use of gloves is warranted. Larger cleanups should be done with eye and respiratory protection.
Definition of transmission. 1  1 : an act, process, or instance of transmitting transmission of a nerve impulse across a synapse. 2  2 : the passage of radio waves in the space between transmitting and receiving stations; also : the act or process of transmitting by radio or television.
Transmission lines, when interconnected with each other, become transmission networks. The combined transmission and distribution network is known as the  power grid  in North America, or just the grid. In the United Kingdom, the network is known as the National Grid.