1. thermionic vacuum tube

noun. Electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope.
Synonyms
diode klystron electronic device vacuum tube pentode circuit electrical circuit grid tube television pickup tube magnetron rectifying tube gas-discharge tube thermionic tube rectifying valve thermionic valve electron tube acorn tube electron multiplier control grid electrode anode cathode plate electric circuit television-camera tube triode X-ray tube tetrode
Antonyms
cathode anode open circuit closed circuit stay in place
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2. tube-nosed fruit bat

noun. Any of various fruit bats of the genus Nyctimene distinguished by nostrils drawn out into diverging tubes.
Synonyms
harpy bat fruit bat megabat harpy genus Nyctimene Nyctimene tube-nosed bat

3. vacuum

noun. (ˈvækjuːm) The absence of matter.
Synonyms
emptiness vacuity
Antonyms
fullness unfairly imperfect
Etymology
vacuum (English)
vacuum (Latin)

4. vacuum

verb. (ˈvækjuːm) Clean with a vacuum cleaner.
Synonyms
hoover make clean vacuum-clean clean
Antonyms
dirty addicted armed incomplete difficult
Etymology
vacuum (English)
vacuum (Latin)

5. vacuum

noun. (ˈvækjuːm) An electrical home appliance that cleans by suction.
Synonyms
vacuum bag Hoover home appliance vacuum cleaner household appliance dust bag
Antonyms
infect untidy septic dirtiness contaminate
Etymology
vacuum (English)
vacuum (Latin)

6. tube

noun. (ˈtuːb, tˈjuːb) Conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases.
Synonyms
blow tube capillary torpedo tube tobacco pipe barrel pea shooter tubing well point speaking tube stem coil inner tube blowpipe pipage piping capillary tube pipe syphon blowtube column venturi siphon drain gun barrel silencer drinking straw straw blowgun hosepipe capillary tubing conduit hose stent cannula mouthpiece test tube chromatography column cigarette holder wellpoint catheter
Antonyms
fill gather achromatic uncover open circuit
Etymology
tube (English)
tube (Middle French (ca. 1400-1600))
tubus (Latin)

7. tube

noun. (ˈtuːb, tˈjuːb) Electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope.
Synonyms
diode klystron electronic device vacuum tube pentode thermionic vacuum tube circuit electrical circuit grid television pickup tube magnetron rectifying tube gas-discharge tube thermionic tube rectifying valve thermionic valve electron tube acorn tube electron multiplier control grid electrode anode cathode plate electric circuit television-camera tube triode X-ray tube tetrode
Antonyms
cathode anode closed circuit stay in place voltaic cell
Etymology
tube (English)
tube (Middle French (ca. 1400-1600))
tubus (Latin)

8. tube

noun. (ˈtuːb, tˈjuːb) A hollow cylindrical shape.
Synonyms
pipe cylinder
Antonyms
unsheathe unwrap kern
Etymology
tube (English)
tube (Middle French (ca. 1400-1600))
tubus (Latin)

9. tube

noun. (ˈtuːb, tˈjuːb) (anatomy) any hollow cylindrical body structure.
Synonyms
anatomical structure bodily structure complex body part tube-shaped structure body structure vessel tubule vas structure salpinx cochlea
Antonyms
electrolytic cell natural object overt surface overhead
Etymology
tube (English)
tube (Middle French (ca. 1400-1600))
tubus (Latin)

10. tube

noun. (ˈtuːb, tˈjuːb) An electric railway operating below the surface of the ground (usually in a city).
Synonyms
railway line railroad subway system underground railway railroad line metro railway system subway
Antonyms
thick rear unwind uncoil strengthen
Etymology
tube (English)
tube (Middle French (ca. 1400-1600))
tubus (Latin)
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