a rod, wire, or other device used to transmit or receive radio or television signals, a pair of long, thin sensory appendages on the heads of insects, crustaceans, and some other arthropods

raise/lower the antenna, have antennae for something, feelers (informal)

Formal and Informal Expressions of antenna

In different contexts, you can replace 'antenna' with suitable alternatives. In a more formal setting, 'aerial, receiver, transmitter' is apt. In informal speech or writing, 'signal catcher' is a commonplace synonym.

antenna: Explore its Definition & Usage

antenna Definition

1a rod, wire, or other device used to transmit or receive radio or television signals
2a pair of long, thin sensory appendages on the heads of insects, crustaceans, and some other arthropods

Using antenna: Examples

Take a moment to familiarize yourself with how "antenna" can be used in various situations through the following examples!

Example
The TV antenna on the roof needs to be adjusted.
Example
The insect's antennae were waving in the air.
Example
The robot uses its antenna to detect obstacles.

antenna Synonyms and Antonyms

Synonyms for antenna

Phrases with antenna

raise/lower the antenna
to adjust the height of a radio or television antenna to improve reception
Example
I can't get a clear signal, I need to raise the antenna.
have antennae for something
to have a natural ability to sense or detect something
Example
Some people have antennae for trouble and can sense when something bad is about to happen.
feelers (informal)
slang term for antennae
Example
The bug's feelers were moving back and forth.

Origins of antenna

from Latin 'antenna', meaning 'sail yard'

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Summary: antenna in Brief

An 'antenna' [ænˈtenə] is a device used to transmit or receive radio or television signals, or a pair of long, thin sensory appendages on the heads of insects and some other arthropods. It is often used in phrases like 'raise/lower the antenna' to adjust the height of a radio or television antenna to improve reception, and 'have antennae for something' to denote a natural ability to sense or detect something. The slang term 'feelers' is sometimes used to refer to antennae.