You searched for:
“pyrotechnic signals”
A signal designed for military use: A pyrotechnic signal produces a colored light or smoke for the purpose of transmitting information.
This entry is located in the following units:
pyro-, pyr-
(page 6)
sign-
(page 3)
xeno-, xen-, -xenic, -xenism, -xenist, -xenous, -xeny
(page 3)