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
infrasonic (adj.)
also
infra-sonic
, 1920, on the model of
supersonic
, etc., from
infra-
+
sonic
. Or perhaps modeled on French
infra-sonore
.
