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A. u.
Noun
Definitions
1.
Noun
Abbreviation of atomic units.
2.
Noun
Abbreviation of arbitrary units.
3.
Noun
Abbreviation of astronomical units.
4.
Noun
Abbreviation of absorbance units.
Synonyms
a.u.
p. u.
p.u.
b. a.
s. a.
w. a.
u.p.
d. a.
uv a
a.a.a.
uv-a
a. & r.
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