27ac Odourless gaseous element discovered by British chemists William Ramsay and Morris travers in 1898, grouped with the noble gases.(4) (?e?n) 12ac English city founded by the Romans as Deva circa AD 48,the last place in England to surrender to William the Conqueror .(1070) (7) (??e???r) 22ac Tunisian currency unit worth one Thousandth of a Dinar.(?i?l?m?) (7) 37ac inflammation of the mucous membranes lining the nose, usually ceused by a viral infection or allergic reaction.(8)