antenna

noun

an·​ten·​na an-ˈte-nə 

plural antennae an-ˈte-(ˌ)nē  or antennas

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

antennal

an-ˈte-nᵊl 

adjective

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

Recent Examples on the Web

The signature feature of the package is the 5G WLAN router and roof antenna that work to maintain faster, more reliable connectivity while out and about wandering the world. —New Atlas, 29 Jan. 2025

Zoom in: The Mavs broadcast local games on WFAA (Channel 8) for antenna users and on MavsTV, a streaming app. —Tasha Tsiaperas, Axios, 24 Jan. 2025

On Wednesday, the government announced plans to overhaul runway infrastructure that included extending safety zones and building localizers, the antenna arrays that help pilots land, with more flexible steel instead of concrete. —Jin Yu Young, New York Times, 23 Jan. 2025

That price includes the quad receiver, power supply, hardware kit, two ¼ wave antennas, two BNC cables, two rack mount brackets, two BNC Bulkhead adapters, an ethernet cable, plus adhesive feet. —Mark Sparrow, Forbes, 22 Jan. 2025

Word History

Etymology

Medieval Latin, from Latin, sail yard

First Known Use

1698, in the meaning defined at sense 1

Phrases Containing antenna

• community antenna television
• whip antenna

Kids Definition

antenna

noun

an·​ten·​na an-ˈten-ə 

plural antennae -ˈten-(ˌ)ē  or antennas

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