Gell-Mann, Murray Syllabification: (Gell-Mann, Murray)Pronunciation: /ˌgel ˈmän/Definition of Gell-Mann, Murray (1929-), US theoretical physicist. He coined the word quark and proposed the concept of strangeness in quarks. Nobel Prize for Physics (1969). Gell-Mann, Murray in other Oxford dictionaries Definition of Gell-Mann, Murray in the British & World English dictionary