Definition of antenna
antennaeplay \-(ˌ)nē\ or
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
antennalplay \-ˈte-nəl\ adjective
Recent Examples of antenna from the Web
Brian Dziedzinski, portable antenna in hand, headed out to search for Costas, who was wearing a Project Lifesaver transmitter band on his wrist.
Go to SunSentinel.com/CutTheCord to watch a video and learn other tips on how to get started with a cheap antenna, streaming media player and subscriptions to online services such as Netflix, Amazon, Sling TV and DirecTV Now.
Ralph, of course, falls down the stairs while trying to move the antenna to get a picture.
At that altitude, satellites take 24 hours to complete one orbit, thus appearing as stationary targets for antennas on the ground.
Few communications pass directly through space networks, but if not for the nearly three dozen atomic clocks providing reliably precise timestamps to anyone with an antenna, financial markets and cell service would quickly fall apart.
In one section of the greenhouse, Szesze points out staghorn sundews from New Zealand, whose tentacles are borne on antenna-like stems.
Just outside the airplane, beneath a plastic fairing, is an arrow antenna that follows one of Inmarsat's four geostationary Global Xpress (aka I-5) satellites.
That would require a 200-cubic-meter chamber studded with a slew of small radio antennas.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'antenna.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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.
Origin and Etymology of antenna
Medieval Latin, from Latin, sail yard
First Known Use: 1698See Words from the same year
ANTENNA Defined for English Language Learners
Definition of antenna for English Language Learners
: a thin sensitive organ on the head of an insect, crab, etc., that is used mainly to feel and touch things
: a device (such as a wire or a metal rod) for sending or receiving radio or television signals
ANTENNA Defined for Kids
Definition of antenna for Students
1 plural antennae \-ˈte-nē\ : one of two or four threadlike movable feelers on the head of insects and crustaceans (as lobsters)
2 plural antennas : a metallic device (as a rod or wire) for sending or receiving radio waves
History for antenna
In Greece more than two thousand years ago, the philosopher and naturalist Aristotle wrote a description of insects’ feelers. He used the Greek word keraia, which is derived from the word keras, “horn,” as a name for the feelers. The word keraia in Greek also means “sail yard,” the long piece of wood that spreads and supports the sails on a ship. Centuries later, when Aristotle's work was translated into Latin, the Latin word for a sail yard, antenna, was used to translate keraia. English later borrowed the word antenna from Latin.
Seen and Heard
What made you want to look up antenna? Please tell us where you read or heard it (including the quote, if possible).