Definition of quantal in English:

quantal

adjective ˈkwɒnt(ə)lˈkwän(t)l

technical

1Composed of discrete units; varying in steps rather than continuously.
〈技〉独立单元组成的；逐步变化的
a quantal release of neurotransmitter
神经传递质的量子释放。
Example sentencesExamples
- Expression of tetanus toxin is known to reduce the frequency of spontaneous quantal release.
- Ideally, this requires the identification of peaks in the histogram at a spacing of one quantal unit.
- The fact that similar step sizes are found in independent experimental approaches using different methodologies implies that the quantal stepping mechanism is a central feature of the contractile process.
- The number of receptors opened following quantal release may vary directly with the total number of receptors at the synapse, but other, more complex, interactions may occur.
- Although these results do not definitively pinpoint the source of the steps, they confirm the earlier hypothesis that shortening is quantal.
1. 1.1Physics Relating to a quantum or quanta, or to quantum theory.
  〔物理〕量子的；量子论的
  Example sentencesExamples
  In this experiment UV + and UV - filters were chosen to yield equal quantal transmittance despite the difference in transmitted wavelengths.
2. 1.2Physiology Relating to or denoting an all-or-none response or state.
  〔主生理〕仅有两种可能性的，全或无的反应（或状态）的
  Example sentencesExamples
  However the neighboring peaks can merge because of variability of quantal response.
  If the random number was smaller, a release event took place, the site was set to the empty state, and the size of the quantal response was determined as described below.
  Furthermore, it allows one to calculate the apparent quantal size for each response in a sequence of stimuli.
  The extrasynaptic receptors that are exposed to a much lower concentration of agonist and are not saturated may substantially enhance the quantal synaptic response.
  In this case, the quantal amplitude of postsynaptic response strongly depends on the number of accessible postsynaptic receptors in the vicinity of the release sites.

Derivatives

quantally

adverb

technical

Thus, a single Gag particle associates ‘quantally’ with one lipid raft, containing homogeneous trimeric viral envelope proteins, to assemble functional virions.
Example sentencesExamples
- Analgesia was defined quantally as a doubling or greater of the baseline latency for each mouse.

Origin

Early 20th century: from quantum + -al.

Definition of quantal in US English:

quantal

adjectiveˈkwän(t)l

technical

1Composed of discrete units; varying in steps rather than continuously.
〈技〉独立单元组成的；逐步变化的
a quantal release of neurotransmitter
神经传递质的量子释放。
Example sentencesExamples
- The number of receptors opened following quantal release may vary directly with the total number of receptors at the synapse, but other, more complex, interactions may occur.
- The fact that similar step sizes are found in independent experimental approaches using different methodologies implies that the quantal stepping mechanism is a central feature of the contractile process.
- Ideally, this requires the identification of peaks in the histogram at a spacing of one quantal unit.
- Although these results do not definitively pinpoint the source of the steps, they confirm the earlier hypothesis that shortening is quantal.
- Expression of tetanus toxin is known to reduce the frequency of spontaneous quantal release.
1. 1.1Physics Relating to a quantum or quanta, or to quantum theory.
  〔物理〕量子的；量子论的
  Example sentencesExamples
  In this experiment UV + and UV - filters were chosen to yield equal quantal transmittance despite the difference in transmitted wavelengths.
2. 1.2Physiology Relating to or denoting an all-or-none response or state.
  〔主生理〕仅有两种可能性的，全或无的反应（或状态）的
  Example sentencesExamples
  However the neighboring peaks can merge because of variability of quantal response.
  If the random number was smaller, a release event took place, the site was set to the empty state, and the size of the quantal response was determined as described below.
  The extrasynaptic receptors that are exposed to a much lower concentration of agonist and are not saturated may substantially enhance the quantal synaptic response.
  In this case, the quantal amplitude of postsynaptic response strongly depends on the number of accessible postsynaptic receptors in the vicinity of the release sites.
  Furthermore, it allows one to calculate the apparent quantal size for each response in a sequence of stimuli.

Origin

Early 20th century: from quantum + -al.

单词	quantal
释义	Definition of quantal in English: quantal adjective ˈkwɒnt(ə)lˈkwän(t)l technical 1Composed of discrete units; varying in steps rather than continuously. 〈技〉独立单元组成的；逐步变化的 a quantal release of neurotransmitter 神经传递质的量子释放。 Example sentencesExamples Expression of tetanus toxin is known to reduce the frequency of spontaneous quantal release. Ideally, this requires the identification of peaks in the histogram at a spacing of one quantal unit. The fact that similar step sizes are found in independent experimental approaches using different methodologies implies that the quantal stepping mechanism is a central feature of the contractile process. The number of receptors opened following quantal release may vary directly with the total number of receptors at the synapse, but other, more complex, interactions may occur. Although these results do not definitively pinpoint the source of the steps, they confirm the earlier hypothesis that shortening is quantal. 1.1Physics Relating to a quantum or quanta, or to quantum theory. 〔物理〕量子的；量子论的 Example sentencesExamples In this experiment UV + and UV - filters were chosen to yield equal quantal transmittance despite the difference in transmitted wavelengths. 1.2Physiology Relating to or denoting an all-or-none response or state. 〔主生理〕仅有两种可能性的，全或无的反应（或状态）的 Example sentencesExamples However the neighboring peaks can merge because of variability of quantal response. If the random number was smaller, a release event took place, the site was set to the empty state, and the size of the quantal response was determined as described below. Furthermore, it allows one to calculate the apparent quantal size for each response in a sequence of stimuli. The extrasynaptic receptors that are exposed to a much lower concentration of agonist and are not saturated may substantially enhance the quantal synaptic response. In this case, the quantal amplitude of postsynaptic response strongly depends on the number of accessible postsynaptic receptors in the vicinity of the release sites. Derivatives quantally adverb technical Thus, a single Gag particle associates ‘quantally’ with one lipid raft, containing homogeneous trimeric viral envelope proteins, to assemble functional virions. Example sentencesExamples Analgesia was defined quantally as a doubling or greater of the baseline latency for each mouse. Origin Early 20th century: from quantum + -al. Definition of quantal in US English: quantal adjectiveˈkwän(t)l technical 1Composed of discrete units; varying in steps rather than continuously. 〈技〉独立单元组成的；逐步变化的 a quantal release of neurotransmitter 神经传递质的量子释放。 Example sentencesExamples The number of receptors opened following quantal release may vary directly with the total number of receptors at the synapse, but other, more complex, interactions may occur. The fact that similar step sizes are found in independent experimental approaches using different methodologies implies that the quantal stepping mechanism is a central feature of the contractile process. Ideally, this requires the identification of peaks in the histogram at a spacing of one quantal unit. Although these results do not definitively pinpoint the source of the steps, they confirm the earlier hypothesis that shortening is quantal. Expression of tetanus toxin is known to reduce the frequency of spontaneous quantal release. 1.1Physics Relating to a quantum or quanta, or to quantum theory. 〔物理〕量子的；量子论的 Example sentencesExamples In this experiment UV + and UV - filters were chosen to yield equal quantal transmittance despite the difference in transmitted wavelengths. 1.2Physiology Relating to or denoting an all-or-none response or state. 〔主生理〕仅有两种可能性的，全或无的反应（或状态）的 Example sentencesExamples However the neighboring peaks can merge because of variability of quantal response. If the random number was smaller, a release event took place, the site was set to the empty state, and the size of the quantal response was determined as described below. The extrasynaptic receptors that are exposed to a much lower concentration of agonist and are not saturated may substantially enhance the quantal synaptic response. In this case, the quantal amplitude of postsynaptic response strongly depends on the number of accessible postsynaptic receptors in the vicinity of the release sites. Furthermore, it allows one to calculate the apparent quantal size for each response in a sequence of stimuli. Origin Early 20th century: from quantum + -al.
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