An arid region is an area of land that has very little rainfall and is usually characterized by DESERT-like conditions. The crossword solutions for this term include the words 'DESERT', 'Negev', 'Gobi', and 'SAHARA'. The Negev is a DESERT located in the southern part of Israel, while the Gobi is a DESERT located in northern China and Mongolia. The SAHARA is the largest DESERT in the world, covering much of North Africa. All of these regions are considered arid regions due to their lack of precipitation and extreme temperatures.