Ph
'''PH''' or
ph
or
pH
or
Ph
may be:
pH
, a measure of
acidity
(
chemistry
)
Ph, a
phenyl
ring (
organic chemistry
)
PH, the
ISO country code
of the
Philippines
ph or
phot
, a measurement of illuminance (
photometry
)
PH
, the union of all
complexity classes
in the
polynomial hierarchy
(
computational complexity theory
)
the
Greek
letter
φ
(
Greek alphabet
)
‹ph›
, a
digraph
(two graphemes,
p
and
h
) that represents the
phoneme
/
f
/ (
phonetics
)
PH de:PH fr:PH ja:PH
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Uses material from
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