Etymology The term "weld" is of English origin, with roots from Scandinavia.It is often confused with the Old English word, weald, meaning "a forested area", but this word eventually morphed into the modern version, "wild".The Old English word for welding iron was samod (to bring together) or samodwellung (to bring together hot, with "hot" more relating to red-hot or a swelling rage; in