Search:
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
actinium (n.)
radioactive element discovered in 1899, from Greek
actin-
, comb. form of
aktis
(genitive
aktinos
) "ray, radiance" (see
actino-
) + chemical suffix
-ium
.
