gasolier Syllabification: (gas·o·lier)Pronunciation: /ˌgasəˈli(ə)r/ (also gaselier)Definition of gasolier noun a chandelier with gas burners rather than light bulbs or candles. Origin: mid 19th century: from gas, on the pattern of chandeliergasolier in other Oxford dictionaries Definition of gasolier in the British & World English dictionary