to the notion of existing in every direction

Omnidirectional Omnidirectional refers to the notion of existing in every direction.

or “all” and “direction”

Omnidirectional comes from the Latin word omni meaning “every” or “all” and “direction”.

all directions

“Omni” is a prefix that means “all,” so “omnidirectional” means “all directions.”

for an antenna that radiates equally well in all directions

“Omnidirectional” is generic term for an antenna that radiates equally well in all directions.

all in all ways or places

Omni means all or in all ways and places, and places requires unity.

in every direction

Well, omnidirectional simply means ‘in every direction.’

in that the signal is transmitted equally in all directions

Nondirectional and omnideirctional essentially mean the same thing in that the signal is transmitted equally in all directions.