bul: озонов слой

Information
has URI	http://lexvo.org/id/term/bul/%D0%BE%D0%B7%D0%BE%D0%BD%D0%BE%D0%B2%20%D1%81%D0%BB%D0%BE%D0%B9

Meaning
means	(noun) a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun ozonosphere, ozone layer