'mass number' definitions:
Definition of '
mass number
'
(from
WordNet
)
noun
The sum of the number of neutrons and protons in an atomic nucleus [syn: mass number,
nucleon number
]
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
