Sferics

noun
1.
(used with a singular verb) electronic equipment for determining the position of storms by locating their accompanying atmospherics.
2.
(used with a plural verb) the atmospheric discharges located by this device.
3.
Also, spherics. (used with a singular verb) the study of atmospherics.
4.
spherics2 (def 1).
noun
1.
the usual US spelling of spherics2
sferics also spherics
(sfîr’ĭks, sfěr’-)
The study of atmospherics, especially through the use of electronic detectors.
sferic also spheric
(sfîr’ĭk, sfěr’-)
A radio emission from a stroke of lightning.