PENTLANDITE Meaning of PENTLANDITE in English [ 'pɛntləndʌɪt ]■ noun a bronze-yellow mineral consisting of a sulphide of iron and nickel.OriginC19: from the name of the Irish traveller Joseph B. Pentland + -ite 1 . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004