| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024au•to•mat•ic /ˌɔtəˈmætɪk/USA pronunciation adj. - having the capability of operating independently without human aid:an automatic sprinkler system.
- Physiologyoccurring without conscious thought, as certain muscular actions;
involuntary;
reflex:The blink of an eyelid is an automatic action. - done unconsciously or from force of habit;
mechanical:His smoking had become automatic. - always following some other event as its cause;
certain to happen:Driving drunk means an automatic fine. - (of a firearm) able to be fired repeatedly with one squeeze of the trigger:automatic rifles.
n. [countable] - Mechanical Engineeringa machine or device that operates automatically:Most washing machines are automatics.
- an automatic pistol or rifle.
- Automotivean automobile equipped with automatic transmission.
Idioms- Idioms on automatic, being operated or controlled by or as if by an automatic device.
au•to•mat•i•cal•ly, adv. WordReference Random House Unabridged Dictionary of American English © 2024au•to•mat•ic (ô′tə mat′ik),USA pronunciation adj. - having the capability of starting, operating, moving, etc., independently:an automatic sprinkler system; an automatic car wash.
- Physiologyoccurring independently of volition, as certain muscular actions; involuntary.
- done unconsciously or from force of habit;
mechanical:an automatic application of the brakes. - occurring spontaneously:automatic enthusiasm.
- (of a firearm, pistol, etc.) utilizing the recoil or part of the force of the explosive to eject the spent cartridge shell, introduce a new cartridge, cock the arm, and fire it repeatedly.
n. - a machine that operates automatically.
- See automatic rifle.
- See automatic pistol.
- Sport[Football.]audible (def. 2).
- AeronauticsSee automatic pilot.
- AutomotiveSee automatic transmission.
- Automotivean automobile equipped with automatic transmission.
- on automatic, being operated or controlled by or as if by an automatic device.
- Greek autómat(os) self-moving (see automaton) + -ic
- 1740–50
- 2.See corresponding entry in Unabridged Automatic, involuntary, spontaneous all mean not under the control of the will. That which is automatic, however, is an invariable reaction to a fixed type of stimulus:The patella reflex is automatic.That which is involuntary is an unexpected response that varies according to the occasion, circumstances, mood, etc.:an involuntary cry of pain.That which is spontaneous arises from immediate stimuli and usually involves an expression of strong feeling:a spontaneous roar of laughter.
Collins Concise English Dictionary © HarperCollins Publishers:: automatic /ˌɔːtəˈmætɪk/ adj - performed from force of habit or without conscious thought; lacking spontaneity; mechanical: an automatic smile
- (of a device, mechanism, etc) able to activate, move, or regulate itself
- (of an act or process) performed by such automatic equipment
- (of the action of a muscle, gland, etc) involuntary or reflex
- occurring as a necessary consequence: promotion is automatic after a year
- (of a firearm) utilizing some of the force of or gas from each explosion to eject the empty shell case, replace it with a new one, and fire continuously until release of the trigger
n - an automatic firearm
- a motor vehicle having automatic transmission
- a machine that operates automatically
Etymology: 18th Century: from Greek automatos acting independentlyˌautoˈmatically adv |