1
plural antennae : one of a pair of slender, movable, segmented sensory organs on the head of insects, myriapods, and crustaceans see insect illustration
2
: a usually metallic device (such as a rod or wire) for radiating or receiving radio waves
a TV antenna
3
antennae plural : a special sensitivity or receptiveness
… his political antennae proved to be shrewder than ever. Erich Segal

Did you know?

The Latin word antenna meant “sail yard,” which is the long spar that supports and spreads the sail on a sailing vessel. The Greek word for a sail yard was keraia, but that was only one meaning of this word. The primary meaning was “horn.” The philosopher Aristotle used keraiai to describe the feelers of insects, probably because of their resemblance to the horns of some larger animals. In a Latin translation of Aristotle’s work made during the Renaissance, the word antennae was used for Greek keraiai. In English we still use antennae for insects’ feelers. And now we also use antenna for the metal rods that pick up radio waves and seem to “feel the air” like the antennae of an insect.

Examples of antenna in a Sentence

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Despite Edwin’s protests, the two playfully wrestle for the device and end up accidentally snapping the antenna in half — cutting off any potential line of communication. Michaela Zee, Variety, 21 Mar. 2025 At their closest point, the two plane’s GPS antennas were separated by about 200 feet, the NTSB reports. Aaron Cooper, CNN, 21 Mar. 2025 They’re joined by a single USB port, an Ethernet port, an optical audio output, a 3.5mm IR blaster jack, a 3.5mm headphone jack, and an antenna/cable connection. PCMAG, 20 Mar. 2025 Starlink now produces two kinds of kits for the consumer market, which use an antenna to connect to Starlink's satellites. Julian Dossett, Space.com, 18 Mar. 2025 See All Example Sentences for antenna

Word History

Etymology

Medieval Latin, from Latin, sail yard

First Known Use

1698, in the meaning defined at sense 1

Time Traveler
The first known use of antenna was in 1698

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Cite this Entry

“Antenna.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/antenna. Accessed 25 Mar. 2025.

Kids Definition

antenna

noun
1
plural usually antennae : one of a pair of slender movable organs of sensation on the head of an arthropod (as an insect or a crab) that are made up of segments
2
plural usually antennas : a device (as a rod or wire) for sending or receiving radio waves

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