| / English Dictionary |
ANTENNA
| Pronunciation (US): |  | (GB): | |
Irregular inflected form: antennae
I. (noun)
Sense 1
Meaning:
One of a pair of mobile appendages on the head of e.g. insects and crustaceans; typically sensitive to touch and taste
Synonyms:
antenna; feeler
Classified under:
Hypernyms ("antenna" is a kind of...):
tentacle (any of various elongated tactile or prehensile flexible organs that occur on the head or near the mouth in many animals; used for feeling or grasping or locomotion)
Derivation:
antennal; antennary (of or relating to antennae)
Sense 2
Meaning:
An electrical device that sends or receives radio or television signals
Synonyms:
aerial; antenna; transmitting aerial
Classified under:
Nouns denoting man-made objects
Hypernyms ("antenna" is a kind of...):
electrical device (a device that produces or is powered by electricity)
Hyponyms (each of the following is a kind of "antenna"):
dipole; dipole antenna (an aerial half a wavelength long consisting of two rods connected to a transmission line at the center)
directional antenna (an antenna that transmits or receives signals only in a narrow angle)
nondirectional antenna; omnidirectional antenna (an antenna that sends or receives signals equally in all directions)
Holonyms ("antenna" is a part of...):
receiver; receiving system (set that receives radio or tv signals)
sender; transmitter (set used to broadcast radio or tv signals)
Derivation:
antennal; antennary (of or relating to antennae)
Sense 3
Meaning:
Sensitivity similar to that of a receptor organ
Example:
he had a special antenna for public relations
Synonyms:
antenna; feeler
Classified under:
Nouns denoting attributes of people and objects
Hypernyms ("antenna" is a kind of...):
sensitiveness; sensitivity (the ability to respond to affective changes in your interpersonal environment)
Context examples:
The inactive set lacks the antenna and does not participate in photosynthesis.
(Scientists discover key factors in how some algae harness solar energy, National Science Foundation)
A dustier environment in the gap might have meant the spacecraft's saucer-shaped main antenna would be needed as a shield during most future dives through the ring plane.
(Cassini Finds 'The Big Empty' Close to Saturn, NASA)
The team calls its device an infrared rectenna, a portmanteau of rectifying antenna.
(Harvesting Electrical Power from Waste Heat, The Titi Tudorancea Bulletin)
These thrusters fire in tiny pulses, or "puffs," lasting mere milliseconds, to subtly rotate the spacecraft so that its antenna points at our planet.
(Voyager 1 Fires Up Thrusters After 37 Years, NASA)
Keep your antenna up and observe.
(AstrologyZone.com, by Susan Miller)
When the antenna points just a few fractions of a degree away from Earth, communications will be severed permanently.
(Cassini Spacecraft Makes Its Final Approach to Saturn, NASA)
The material could enable a range of new applications from gripper arms for delicate or heavy objects to antennas that change frequencies on the fly.
(Tiny magnetic particles enable new material to bend, twist and grab, National Science Foundation)
The active set has a structure associated with pigment proteins, such as green chlorophyll that absorbs light, in an antenna to harvest light for photosynthesis.
(Scientists discover key factors in how some algae harness solar energy, National Science Foundation)
Cassini's Radio and Plasma Wave Science (RPWS) instrument was one of two science instruments with sensors that poke out from the protective shield of the antenna (the other being Cassini's magnetometer).
(Cassini Finds 'The Big Empty' Close to Saturn, NASA)
There may be other antenna close by.
(Health threats caused by mobile phone radiation, EUROPARL TV)
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