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
heptahedron
[heptahedron 词源字典]
"A solid figure with seven plane faces", Late 17th century: from hepta- 'seven' + -hedron, on the pattern of words such as
polyhedron
.
[heptahedron etymology, heptahedron origin, 英语词源]
[heptahedron 词源字典]