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English Lexicon

Quantal

/ˈkwɒn.təl/
adjectiveCEFR C1 (Advanced)Top #28400 frequency
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Comprehensive Definitions & Senses

2 senses
As adjective
  1. 1

    Relating to a quantum or quanta; occurring in discrete, specified amounts or packets rather than a continuous spectrum.

    "The membrane potential changes in quantal increments due to the release of neurotransmitter vesicles."
  2. 2

    In biology and pharmacology, referring to responses that are all-or-none for individual biological units.

    "A quantal dose-response curve measures the percentage of a population exhibiting a specific binary response."
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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

Derived from the noun 'quantum' (from Latin quantus, meaning 'how much') combined with the adjectival suffix '-al'. Coined in the 20th century alongside the development of quantum mechanics and later adopted into neurophysiology and biology to describe discrete, packet-like units of action or energy.

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