plural antennae
-ni 
or antennas
or antennas
1
: a thin sensitive organ on the head of an insect, crab, etc., that is used mainly to feel and touch things
—sometimes used figuratively
a Senator with sensitive political antennae [=a Senator who is very aware of political issues and attitudes]
Note: The plural of antenna in this sense is usually antennae.
2
chiefly US
: a device (such as a wire or a metal rod) for sending or receiving radio or television signals
a TV antenna [=(chiefly Brit) aerial]
Note: The plural of antenna in this sense is usually antennas.
Cite this Entry
“Antenna.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/antenna. Accessed 6 May. 2026.
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