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单词 reflex
释义

WordReference Random House Learner's Dictionary of American English © 2024
re•flex /ˈriflɛks/USA pronunciation   n. 
  1. Physiology a movement or a response that is automatic and involuntary, caused by a nerve impulse that reacts quickly to some outside action without waiting for the brain to process it and respond:[countable]Your fingers will withdraw from a hot surface in a reflex.
  2. Physiologyany automatic, unthinking, often habitual behavior or response: [countable]quick political reflexes.[uncountable* by + ~]He smiles at other people almost by reflex.

adj. [before a noun]
  1. Physiologyof or relating to such an automatic response to some outside action:a reflex act.
See -flex-.
WordReference Random House Unabridged Dictionary of American English © 2024
re•flex  (adj., n. rēfleks;v. ri fleks),USA pronunciation adj. 
  1. Physiologynoting or pertaining to an involuntary response to a stimulus, the nerve impulse from a receptor being transmitted inward to a nerve center that in turn transmits it outward to an effector.
  2. occurring in reaction;
    responsive.
  3. cast back;
    reflected, as light, color, etc.
  4. bent or turned back.
  5. Radio and Televisiondesignating a radio apparatus in which the same circuit or part performs two functions.

n. 
  1. Physiology
    • Also called reflex act. movement caused by a reflex response.
    • Also called reflex action. the entire physiological process activating such movement.
  2. Physiologyany automatic, unthinking, often habitual behavior or response.
  3. the reflection or image of an object, as exhibited by a mirror or the like.
  4. a reproduction, as if in a mirror.
  5. a copy;
    adaptation.
  6. reflected light, color, etc.
  7. Linguistics[Historical Ling.]an element in a language, as a sound, that has developed from a corresponding element in an earlier form of the language:The(ō) in "stone'' is a reflex of Old English ā.
  8. Radio and Televisiona reflex radio receiver.
  9. Photographya reflex camera.

v.t. 
  1. to subject to a reflex process.
  2. to bend, turn, or fold back.
  3. to arrange in a reflex system.
  • Latin reflexus bent back, past participle of reflectere to reflect
  • 1500–10
reflex•ly, adv. 
reflex•ness, n. 

Collins Concise English Dictionary © HarperCollins Publishers::
reflex n /ˈriːflɛks/
  1. an immediate involuntary response, esp one that is innate, such as coughing or removal of the hand from a hot surface, evoked by a given stimulus
  2. (as modifier): a reflex action
    See also reflex arc
  3. a mechanical response to a particular situation, involving no conscious decision
  4. (as modifier): a reflex response
  5. a reflection; an image produced by or as if by reflection
adj /ˈriːflɛks/
  1. (of an angle) between 180° and 360°
  2. (prenominal) turned, reflected, or bent backwards
vb /rɪˈflɛks/
  1. (transitive) to bend, turn, or reflect backwards
Etymology: 16th Century: from Latin reflexus bent back, from reflectere to reflect

reˈflexible adj reˌflexiˈbility n
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