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P (1)
P (2)
P (3)
p (1)
p (2)
p (3)
P/A
p.a.
P and H
p.b.
p.c.
p.d.
P-D ratio
P/E
p.e.
p/e ratio
p/e ratio-to-EPS growth
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ozone hole

ozone hole (plural ozone holes)


noun 
Definition:
 
hole in ozone layer: an area of the upper atmosphere where the ozone layer is absent or has become unusually thin

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