The term "plumbic" is used to describe compounds or ions of lead in its highest oxidation state. Synonyms for this word include "lead(IV)", "tetraplumbic", and "plumbyl". These terms designate the same chemical state of lead, but are variations in nomenclature used by different sources or organizations. Another synonym for plumbic is "lead dioxide", which is a common compound of lead in the +4 oxidation state. Plumbic compounds are highly toxic, and exposure to them can lead to serious health problems. Hence, it is important to understand these synonyms, which are commonly used in scientific literature, to avoid confusion and to ensure proper identification of the chemical properties of lead.