Periodic Table
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Chemistry Definitions
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may definition
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
a
term
indicating that a provision is neither required nor prohibited by a
specification
. [SEMI F1-90]
See also:
mask, trimetal definition
Materials analysis (cross-reference listing) definition
material definition
mass number definition
Medicinal chemistry definition
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