noun, verb ·2 syllables ·Rare ·Advanced level

Definitions

Noun

1. 1
   The portion of a communications link used for the transmission of signals from an Earth terminal to a satellite or to an airborne platform. An uplink is the converse of a downlink. An uplink or downlink is distinguished from reverse link or forward link.
2. 2
   a transmission from Earth to a spacecraft or the path of such a transmission wordnet
3. 3
   The communication path from a mobile device to a base station, a consumer to the network backbone, a client device to a server, etc.
4. 4
   Data transmission from a data station to the headend.

Verb

1. 1
   To transmit a signal by means of an uplink. transitive

Antonyms

All antonyms

downlink

Etymology

From up + link.

Related phrases

earth terminalforward linkreverse link

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.