Definition

1. Noun:
   • A sensory appendage on the head of insects, crustaceans, and some other arthropods: One of a pair of long, thin, segmented structures used for touch, smell, and sometimes taste.
   • A natural sensitivity or intuitive understanding: A special ability to detect or sense subtle trends, feelings, or information, similar to how an antenna detects signals.
   • A metallic device for transmitting or receiving electromagnetic waves: An electrical device, often a rod or wire, used in radio, television, or telecommunications to send or receive signals.

Examples of Usage

• Noun (Sensory appendage):
  • The beetle uses its antenna to explore its environment.
  • Antennae help insects detect chemicals in the air.
• Noun (Intuitive sensitivity):
  • A good journalist has an antenna for important stories.
  • She has a political antenna that helps her understand public opinion.
• Noun (Electrical device):
  • We installed a new television antenna on the roof.
  • The car's radio antenna was broken.

Advanced Usage

• "To have one's antenna up": To be alert and attentive, trying to detect information or subtle cues.
  • During the negotiations, he had his antenna up for any sign of disagreement.
• "To put up an antenna": Literally, to install a signal-receiving device; figuratively, to become more receptive or attentive.
  • The company is putting up its antenna to catch new market trends.

Variants and Related Words

• Antennae (n): The plural form most commonly used for the sensory appendages of insects.
  • Butterflies have beautiful, clubbed antennae.
• Antennas (n): The plural form often used for electronic devices, and sometimes for insect appendages in less technical contexts.
  • The building was covered in satellite antennas.
• Antennal (adj): Relating to an antenna.
  • The insect's antennal segments were clearly visible.

Synonyms

• Feeler: A synonym for the sensory appendage on an insect.
• Aerial: A common synonym, especially in British English, for the radio/TV signal device.
• Intuition, sensitivity: Synonyms for the figurative meaning of natural detection ability.

Related Phrases

• Antenna array: A group of multiple antennas working together as a single unit to improve signal direction or strength.
  • The radar station uses a large antenna array.
• Dish antenna: A parabolic antenna shaped like a dish, used for satellite communications.
  • The satellite TV signal is received by a dish antenna.

Related Idioms

• On the same wavelength: Thinking in a similar way or understanding each other well. (This idiom relates to the radio signal concept of an antenna).
  • We work well together because we're on the same wavelength.

Noun

1. one of a pair of mobile appendages on the head of e.g. insects and crustaceans; typically sensitive to touch and taste
2. sensitivity similar to that of a receptor organ
   • he had a special antenna for public relations
3. an electrical device that sends or receives radio or television signals