noun
: fine particles of rock powder that are blown out from a volcano and that may remain suspended in the atmosphere for long periods producing red sunsets and climatic modifications thousands of miles away
noun
: fine particles of rock powder that are blown out from a volcano and that may remain suspended in the atmosphere for long periods producing red sunsets and climatic modifications thousands of miles away
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012