Orthicon is a term that is very specific to the field of electronics. It was used to describe an advanced image scanning device that was popular during the early days of television. Despite its precise definition, there are several synonyms for the word orthicon that can be used in different contexts. For instance, some people might use the term image converter to refer to the same device. Others might prefer to use the term electron-multiplying camera or EMCCD instead. Regardless of the specific synonym that is being used, the underlying concept remains the same - a sophisticated electronic device that can capture high-quality images by precisely scanning them row by row.