Word forms: plural diagnoses. variable noun. Diagnosis is the discovery and naming of what is wrong with someone who is ill or with something that is not working properly. I need to have a second test to confirm the diagnosis. Symptoms may not appear for some weeks, so diagnosis can be difficult.
Definition - What does Copper Corrosion mean? Copper corrosion is the corrosion of materials made of copper or copper alloys. With exposure to atmosphere, copper oxidizes, causing bright copper surfaces to tarnish. After a few years, this tarnish gradually changes to dark brown or black, and finally to green.
As a result of its excellent electrical conductivity, copperâs most common use is in electrical equipment such as wiring and motors. Because it corrodes slowly, copper is used in roofing, guttering, and as rainspouts on buildings. It is also used in plumbing and in cookware and cooking utensils.