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.
Copper (Pitting) Corrosion. There are many forms of corrosion, but pitting corrosion is most likely to culminate in pinhole leaks in copper plumbing. Pitting corrosion is the non-uniform localized attack of the wall of copper tube, pipe, or fittings initiated on the inside surface of copper water pipes.