Freebase(0.00 / 0 votes)Rate this definition: Quinine. Quinine is a natural white crystalline alkaloid having antipyretic, antimalarial, analgesic, and anti-inflammatory properties and a bitter taste. It is a stereoisomer of quinidine which, unlike quinine, is an antiarrhythmic.
Papua New Guinea is the closest country to Australia. Australia's northern tip, Cape York, is about 150km from Papua New Guinea.Papua New Guinea is followed, in order, by Eas â¦ t Timor, Indonesia, New Caledonia, Philippines, Brunei then New Zealand.Australia is an island continent, it's nearest neighbors are New Zealand, Papua New Guinea and Indonesia.apua New Guinea is the closest country to Australia. Australia's northern tip, Cape York, is about 150km from Papua New Guinea.
Report Abuse. technically Australia is an island and a country and a continent. but if u don't consider Australia an island it would either be New Guinea or one of the New Zealand islands (north or south)...but no matter what Australia is the biggest land mass in the region of Oceania.jburford93 Â· 8 years ago.s New Zealand the biggest island in Oceania and Australia the biggest land mass in Oceania. Add your answer.