telecommunication-n; 2 Senses

Sense Number 1: the act of transmitting electromagnetic signals across distances

Commentary: TELECOMMUNICATION[+event][+communication][+transmission][+remote][+signal][+electromagnetic]
NOTE: refers to events of actually sending signals (or potentially sending them)

Examples:
The telecommunication of these messages occurs at the speed of light.
The attack was intended to disrupt their telecommunication capabilities.
The encryption provided secure telecommunications between the military bases.

Mappings:
WordNet 3.0 Sense Numbers: 1

Sense Number 2: the science and technology of signal transmission

Commentary: TELECOMMUNICATION[+entity][+symbolic][+knowledge][+domain][+technology][+transmission][+remote][+signal][+electromagnetic] (often plural) the branch of electrical engineering concerned with the technology of electronic communication at a distance
NOTE: refers to the know-how required to do Sense 1

Examples:
He worked in the telecommunications industry for many years.
Sally is taking an advanced course in telecommunications.
Their company pioneered many of the recent advances in telecommunications.

Mappings:
WordNet 3.0 Sense Numbers: 2