What does imperceptible mean?

Definitions for imperceptible
ˌɪm pərˈsɛp tə bəlim·per·cep·ti·ble

This dictionary definitions page includes all the possible meanings, example usage and translations of the word imperceptible.

Princeton's WordNet

  1. imperceptible, unperceivableadjective

    impossible or difficult to perceive by the mind or senses

    "an imperceptible drop in temperature"; "an imperceptible nod"; "color is unperceivable to the touch"


  1. imperceptibleadjective

    Not perceptible, not detectable, too small in magnitude to be observed.

    We all missed the imperceptible shake of his head as he tried to warn us without being seen.

Samuel Johnson's Dictionary

  1. Imperceptibleadjective

    Not to be discovered; not to be perceived; small; subtle; quick or slow so as to elude observation.

    Etymology: imperceptible, Fr. in and perceptible.

    Some things are in their nature imperceptible by our sense; yea, and the more refined parts of material existence, which, by reason of their subtilty, escape our perception. Matthew Hale.

    In the sudden changes of his subject with almost imperceptible connections, the Theban poet is his master. Dryden.

    The parts must have their outlines in waves, resembling flames, or the gliding of a snake upon the ground: they must be almost imperceptible to the touch, and even. Dryden.

    The alterations in the globe are very slight, and almost imperceptible, and such as tend to the benefit of the earth. Wood.


  1. imperceptible

    Perception (from Latin perceptio 'gathering, receiving') is the organization, identification, and interpretation of sensory information in order to represent and understand the presented information or environment. All perception involves signals that go through the nervous system, which in turn result from physical or chemical stimulation of the sensory system. Vision involves light striking the retina of the eye; smell is mediated by odor molecules; and hearing involves pressure waves. Perception is not only the passive receipt of these signals, but it is also shaped by the recipient's learning, memory, expectation, and attention. Sensory input is a process that transforms this low-level information to higher-level information (e.g., extracts shapes for object recognition). The process that follows connects a person's concepts and expectations (or knowledge), restorative and selective mechanisms (such as attention) that influence perception. Perception depends on complex functions of the nervous system, but subjectively seems mostly effortless because this processing happens outside conscious awareness. Since the rise of experimental psychology in the 19th century, psychology's understanding of perception has progressed by combining a variety of techniques. Psychophysics quantitatively describes the relationships between the physical qualities of the sensory input and perception. Sensory neuroscience studies the neural mechanisms underlying perception. Perceptual systems can also be studied computationally, in terms of the information they process. Perceptual issues in philosophy include the extent to which sensory qualities such as sound, smell or color exist in objective reality rather than in the mind of the perceiver.Although people traditionally viewed the senses as passive receptors, the study of illusions and ambiguous images has demonstrated that the brain's perceptual systems actively and pre-consciously attempt to make sense of their input. There is still active debate about the extent to which perception is an active process of hypothesis testing, analogous to science, or whether realistic sensory information is rich enough to make this process unnecessary.The perceptual systems of the brain enable individuals to see the world around them as stable, even though the sensory information is typically incomplete and rapidly varying. Human and other animal brains are structured in a modular way, with different areas processing different kinds of sensory information. Some of these modules take the form of sensory maps, mapping some aspect of the world across part of the brain's surface. These different modules are interconnected and influence each other. For instance, taste is strongly influenced by smell.

Webster Dictionary

  1. Imperceptibleadjective

    not perceptible; not to be apprehended or cognized by the souses; not discernible by the mind; not easily apprehended

  2. Etymology: [Pref. im- not + perceptible: cf. F. imperceptible.]

Chambers 20th Century Dictionary

  1. Imperceptible

    im-pėr-sep′ti-bl, adj. not discernible: insensible: minute.—ns. Impercep′tibleness, Imperceptibil′ity.—adv. Impercep′tibly.—adjs. Impercep′tive, not perceiving; Impercip′ient, having no power to perceive.

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  1. Chaldean Numerology

    The numerical value of imperceptible in Chaldean Numerology is: 6

  2. Pythagorean Numerology

    The numerical value of imperceptible in Pythagorean Numerology is: 7

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"imperceptible." Definitions.net. STANDS4 LLC, 2023. Web. 10 Jun 2023. <https://www.definitions.net/definition/imperceptible>.

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    irregularly slashed and jagged as if torn
    • A. lacerate
    • B. numinous
    • C. repugnant
    • D. lank

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