1. thermionic valve

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 thermionic vacuum tube circuit electrical circuit grid tube television pickup tube magnetron rectifying tube gas-discharge tube thermionic tube rectifying 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. valve-in-head engine

noun. Internal-combustion engine having both inlet and exhaust valves located in the cylinder head.
Synonyms
ICE internal-combustion engine

3. valve

noun. (ˈvælv) A structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it.
Synonyms
anatomical structure bodily structure complex body part ileocecal valve valvelet valvula body structure pump heart ticker cardiac valve valvule heart valve structure
Antonyms
stimulate deprive lend oneself arrive confront
Etymology
valve (English)
valva (Latin)

4. valve

noun. (ˈvælv) Device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone.
Synonyms
brass device brass instrument
Antonyms
unclog free unstuff be well
Etymology
valve (English)
valva (Latin)

5. valve

noun. (ˈvælv) The entire one-piece shell of a snail and certain other molluscs.
Synonyms
shell
Antonyms
powerlessness unrestraint
Etymology
valve (English)
valva (Latin)

6. valve

noun. (ˈvælv) Control consisting of a mechanical device for controlling the flow of a fluid.
Synonyms
clack valve control escape cock clapper valve controller choke escape throttle poppet valve exhaust valve slide valve clack butterfly valve throttle valve escape valve intake valve handwheel safety valve ball valve accelerator poppet relief valve
Antonyms
intemperance indiscipline unskillfulness be born survive
Etymology
valve (English)
valva (Latin)

7. valve

noun. (ˈvælv) One of the paired hinged shells of certain molluscs and of brachiopods.
Synonyms
shell
Antonyms
inactivity derestrict
Etymology
valve (English)
valva (Latin)
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