Definition of mount pinatubo in English English dictionary
a mountain that is an active volcano in the Philippines. It was inactive for 600 years before erupting in 1991 and killing 343 people. Volcano, western Luzon, Philippines. Located about 55 mi (90 km) northwest of Manila, it rose to a height of about 4,800 ft (1,460 m) before its eruption in 1991 (for the first time in 600 years). Its explosions produced a column of smoke and ash more than 19 mi (30 km) high and left some 100,000 people homeless. The ashfalls forced the evacuation and eventual closing of a nearby U.S. Air Force base. The eruption was one of the largest of the 20th century