Jean Baptiste van (ʒɑ̃ batist vɑn). 1577–1644, Flemish chemist and physician. He was the first to distinguish gases and claimed to have coined the word gas
Helmont in American English
(ˈhelmɑnt, Flemish ˈhelmɔnt)
noun
Jan Baptista van (jɑːn bɑːpˈtɪstɑː vɑːn) 1579–1644, Flemish chemist and physician