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1. Physics
a. Of or relating to quanta, quantum mechanics, or a quantized system.
b. Existing in only one of two possible states.
2. Biology Of or designating an all-or-none response or effect: a quantal reaction.

quan′tal·ly adv.


1. (Atomic Physics) of or relating to a quantum or an entity that is quantized
2. denoting something that is capable of existing in only one of two states
ˈquantally adv


(ˈkwɒn tl)

of or pertaining to quanta or to quantum mechanics.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.quantal - of or relating to a quantum or capable of existing in only one of two states
natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"
References in periodicals archive ?
The session would check the progress of the anti-money laundering and terror financing cases, including the ones pertaining to Quantal Technologies and Comprehensive Business International, Sundar Trading Company, KK Metal Industries and Khurram Steel Mills.
Frass failure and pupation failure as quantal measurements of Bacillus thuringiensis toxicity to Lepidoptera.
This was called, "The Quantal Theory of Immunity" which was published by World Scientific Co.
schneideri methanolic extract (50 [micro]g/mL of granular gland secretion) responded with an increase in quantal content (release of acetylcholine) that was inhibited with a non-toxic concentration of ouabain (1 [micro]g/mL), an inhibitor of the [Na.sup.+]/ [K.sup.+]-ATPase, after 5 min prior to incubation, indicating that these effects were prevented through the inhibition of [Na.sup.+]-[K.sub.+]-ATPase activity of muscle motor innervation.
One can perceive a smooth register transition, but a quantal shift always takes place in the mechanism of vibration.
Chowdhury, Sheremeta, and Turocy (2014) suggest that overspreading may be due to the participants implementing quantal response strategies (McKelvey and Palfrey 1995).
Listening -Opinion Test The recommended test method for listening tests is Absolute category rating (ACR) Allow to evaluate the threshold Quantal Response Detectability values of certain quantities and the Tests corresponding probabilities Compares the system to be measured Degradation Category Rating with a high quality fixed reference (DCR) and the degradation (from 'inaudible to very annoying") is noted on a five (5) point scale Variant of DCR method.
There is no denying that, considering the universality of the quantum of action, it is very tempting to regard any classical theory as a limiting case to some quantal theory.
In some cases, such as when a NOAEL was reported for a general category of "reproductive" effects that might include both continuous and quantal endpoints, multiple conceptual models were assigned, resulting in multiple HDmi estimates for a single RfD-endpoint combination.
Introduction: The quantal hypothesis of synaptic transmission