'atomic number 55' definitions:
Definition of '
atomic number 55
'
From:
WordNet
noun
A soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal [syn:
cesium
,
caesium
,
Cs
, atomic number 55]
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