UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ˈmɛtəl/US:USA pronunciation: IPA and respellingUSA pronunciation: IPA/ˈmɛtəl/ ,USA pronunciation: respelling(met′l)
When both "l" and "ll" forms exist, spellings with a double "l" are correct, but rare, in US English, while those with a single "l" are not correct in UK English.