Learn how to say Amazonian correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word Amazon:
a river in South America, flowing over 6,683 km (4,150 miles) through Peru, Colombia, and Brazil into the Atlantic Ocean. It drains two fifths of the continent and in terms of water flow it is the largest river in the world.
the river bore various names after it was first encountered by Europeans in 1500 and was finally called Amazon after a legendary race of female warriors believed to live on its banks