impermeableadj.

Brit.

/(ˌ)ɪmˈpəːmɪəbl/, U.S.

/ᵻmˈpərmiəb(ə)l/

Origin: Apparently formed within English, by derivation. Etymons: im- prefix², permeable adj.

Etymology: Apparently < im- prefix² + permeable adj.Compare post-classical Latin impermeabilis (6th cent.), Middle French impermeable, French imperméable (of people) inscrutable (1546 in an isolated attestation in Rabelais), impenetrable (late 18th cent.), Italian impermeabile (1615 or earlier).

1. That does not permit the passage of water, other liquid, or gas; not permeable to or by (a liquid or gas).In quot. 1753 used with reference to (supposed) electric fluid.

ΘΚΠ

society > occupation and work > materials > types of material generally > [adjective] > permeable > not

impermeable1661

impervious1783

the world > movement > motion in a certain direction > movement over, across, through, or past > [adjective] > through > permeating > permeable > not

impermeable1661

imperviable1700

1661 T. Salusbury tr. P. A. Foscarini Epist. in Math. Coll. & Transl. I. 494 Nor yet a solid Body, and impermeable [It. impermeabile]; and much lesse..of an impenetrable and most obdurate Density.

1714 D. Turner De Morbis Cutaneis i. x. 80 That there is no Part impermeable even to that Vital Nectar the Blood, is conspicuous from the Transuding of this purple Fluid.

1753 W. Watson in Philos. Trans. 1751–2 (Royal Soc.) 47 554 To demonstrate, that glass is not absolutely impermeable to the electric fluid.

1828 H. Steuart Planter's Guide vi. 205 A bed of hard and impermeable clay.

1881 Encycl. Brit. XII. 12/1 Crystalline doubly refracting particles or micellæ, each consisting of numerous atoms and impermeable by water.

1912 C. B. Hayward Pract. Aeronaut. i. iii. 14 Three layers of this rubberized fabric are cemented together to form what is known as ‘balloon cloth’, which is about as impermeable a material as can be made without involving undue weight.

1989 Plumbing (Time-Life Bks.) (new ed.) iv. 107/3 A seepage pit should be at least 2 feet above ground water and 5 feet above any impermeable bedrock.

2011 New Yorker 19 Dec. 120/1 Mixed with water and baked in the sun, it hardens into a crust that's nearly impermeable to the rain.

2. That cannot be entered or passed through; impassable, impenetrable. Also with to.

ΘΚΠ

society > travel > [adjective] > travelled on, over, or through > able to be > unable to be

ungoingable1482

unpassablea1525

unpassageable1592

passless1603

irrepassable1608

unpassible1646

untravellable1652

impracticable1653

impermeable1662

unvoyageable1667

impassable1697

landlocked1770

impervious1774

intraversable1803

unrideable1827

intransitable1838

untraversable1856

uncrossable1882

1662 W. Greenhill Expos. 19 Last Chapters Ezekiel xlvii. 563 Hast thou seen..how suddenly these waters break forth?..how in a little time they have risen up to a River, and such a River as is impermeable?

1697 J. Evelyn Numismata iv. 160 Attempts to discover the Nor-West, and other hitherto impermeable Passages.

?1796 Edinburgh (Pennycuick House) 1 The dark, gigantic, impermeable, and seemingly unmeasurable forest.

1807 J. Barlow Columbiad ix. 338 Between them stretch'd the impermeable main.

1851 Lancet June 508/1 I cannot avoid the conviction that some strictures there are, which at least ought to be considered impermeable to the catheter and bougie.

1890 Derby Mercury 6 Aug. 8/1 A high wind fills the air with a dust-fog almost as impermeable to the rays of the sun as a watery cloud.

2014 Mail & Guardian (Johannesburg) (Nexis) 24 Jan. He sees great potential in the site, currently an impermeable barrier to pedestrians heading to the adjacent bus, taxi and train termini.

3. figurative. Of a person, the mind, etc.: not open or receptive to new ideas, arguments, etc.; not susceptible to emotion. Chiefly in predicative use, esp. with to.

ΚΠ

1844 Northern Light (Albany, N.Y.) 2 Sept. 74/2 It [sc. the effect of genius] penetrates sooner or later, the dullest and most impermeable mind.

1878 Morning Post 25 Jan. 6/5 The stern, old Miss Ansell..believes supremely in duty, but seems impermeable to every other feeling.

1913 Jrnl. Philos., Psychol. & Sci. Methods 10 655 A social group..able to maintain beliefs that render them impermeable to a good deal of conflicting sense experience.

1965 J. R. R. Tolkien Let. 12 Sept. (1995) 363 I had a long conversation; but she seemed to me impermeable.

2017 N.Z. Farmer (Nexis) 18 Sept. 8 They become impermeable to new evidence and logical argument.

Derivatives

imˈpermeableness n. [compare earlier impermeability n.] the quality or condition of being impermeable; = impermeability n.

ΚΠ

1847 J. Craig New Universal Dict. Impermeableness.

1923 Sci. Amer. Jan. 51/2 The invention has for its object an adhesive composition having special qualities of flexibility and impermeableness.

2013 A. Stevens Offender Rehabilit. & Therapeutic Communities vi. 128 Winston's depiction of ‘being a man’ centred upon two themes: aggression and emotional impermeableness.

imˈpermeably adv. so as to be impermeable.

ΚΠ

1842 Provinc. Med. & Surg. Jrnl. 8 Jan. 285/2 You try to introduce a bougie or a catheter, but it will not enter the bladder, because the urethra is squeezed up impermeably by the abscess.

1909 Sci. Amer. 3 July 8/2 There may be but a mere burn—something quite superficial; yet some part of a wound..may become at once impermeably sealed.

2011 Independent (Nexis) 30 July The impermeably cool young German could manage only a fourth-placed finish on home turf last weekend.

This entry has been updated (OED Third Edition, June 2019; most recently modified version published online March 2022).

单词	impermeable
释义	impermeableadj. Brit. /(ˌ)ɪmˈpəːmɪəbl/, U.S. /ᵻmˈpərmiəb(ə)l/ Origin: Apparently formed within English, by derivation. Etymons: im- prefix², permeable adj. Etymology: Apparently < im- prefix² + permeable adj.Compare post-classical Latin impermeabilis (6th cent.), Middle French impermeable, French imperméable (of people) inscrutable (1546 in an isolated attestation in Rabelais), impenetrable (late 18th cent.), Italian impermeabile (1615 or earlier). 1. That does not permit the passage of water, other liquid, or gas; not permeable to or by (a liquid or gas).In quot. 1753 used with reference to (supposed) electric fluid. ΘΚΠ society > occupation and work > materials > types of material generally > [adjective] > permeable > not impermeable1661 impervious1783 the world > movement > motion in a certain direction > movement over, across, through, or past > [adjective] > through > permeating > permeable > not impermeable1661 imperviable1700 1661 T. Salusbury tr. P. A. Foscarini Epist. in Math. Coll. & Transl. I. 494 Nor yet a solid Body, and impermeable [It. impermeabile]; and much lesse..of an impenetrable and most obdurate Density. 1714 D. Turner De Morbis Cutaneis i. x. 80 That there is no Part impermeable even to that Vital Nectar the Blood, is conspicuous from the Transuding of this purple Fluid. 1753 W. Watson in Philos. Trans. 1751–2 (Royal Soc.) 47 554 To demonstrate, that glass is not absolutely impermeable to the electric fluid. 1828 H. Steuart Planter's Guide vi. 205 A bed of hard and impermeable clay. 1881 Encycl. Brit. XII. 12/1 Crystalline doubly refracting particles or micellæ, each consisting of numerous atoms and impermeable by water. 1912 C. B. Hayward Pract. Aeronaut. i. iii. 14 Three layers of this rubberized fabric are cemented together to form what is known as ‘balloon cloth’, which is about as impermeable a material as can be made without involving undue weight. 1989 Plumbing (Time-Life Bks.) (new ed.) iv. 107/3 A seepage pit should be at least 2 feet above ground water and 5 feet above any impermeable bedrock. 2011 New Yorker 19 Dec. 120/1 Mixed with water and baked in the sun, it hardens into a crust that's nearly impermeable to the rain. 2. That cannot be entered or passed through; impassable, impenetrable. Also with to. ΘΚΠ society > travel > [adjective] > travelled on, over, or through > able to be > unable to be ungoingable1482 unpassablea1525 unpassageable1592 passless1603 irrepassable1608 unpassible1646 untravellable1652 impracticable1653 impermeable1662 unvoyageable1667 impassable1697 landlocked1770 impervious1774 intraversable1803 unrideable1827 intransitable1838 untraversable1856 uncrossable1882 1662 W. Greenhill Expos. 19 Last Chapters Ezekiel xlvii. 563 Hast thou seen..how suddenly these waters break forth?..how in a little time they have risen up to a River, and such a River as is impermeable? 1697 J. Evelyn Numismata iv. 160 Attempts to discover the Nor-West, and other hitherto impermeable Passages. ?1796 Edinburgh (Pennycuick House) 1 The dark, gigantic, impermeable, and seemingly unmeasurable forest. 1807 J. Barlow Columbiad ix. 338 Between them stretch'd the impermeable main. 1851 Lancet June 508/1 I cannot avoid the conviction that some strictures there are, which at least ought to be considered impermeable to the catheter and bougie. 1890 Derby Mercury 6 Aug. 8/1 A high wind fills the air with a dust-fog almost as impermeable to the rays of the sun as a watery cloud. 2014 Mail & Guardian (Johannesburg) (Nexis) 24 Jan. He sees great potential in the site, currently an impermeable barrier to pedestrians heading to the adjacent bus, taxi and train termini. 3. figurative. Of a person, the mind, etc.: not open or receptive to new ideas, arguments, etc.; not susceptible to emotion. Chiefly in predicative use, esp. with to. ΚΠ 1844 Northern Light (Albany, N.Y.) 2 Sept. 74/2 It [sc. the effect of genius] penetrates sooner or later, the dullest and most impermeable mind. 1878 Morning Post 25 Jan. 6/5 The stern, old Miss Ansell..believes supremely in duty, but seems impermeable to every other feeling. 1913 Jrnl. Philos., Psychol. & Sci. Methods 10 655 A social group..able to maintain beliefs that render them impermeable to a good deal of conflicting sense experience. 1965 J. R. R. Tolkien Let. 12 Sept. (1995) 363 I had a long conversation; but she seemed to me impermeable. 2017 N.Z. Farmer (Nexis) 18 Sept. 8 They become impermeable to new evidence and logical argument. Derivatives imˈpermeableness n. [compare earlier impermeability n.] the quality or condition of being impermeable; = impermeability n. ΚΠ 1847 J. Craig New Universal Dict. Impermeableness. 1923 Sci. Amer. Jan. 51/2 The invention has for its object an adhesive composition having special qualities of flexibility and impermeableness. 2013 A. Stevens Offender Rehabilit. & Therapeutic Communities vi. 128 Winston's depiction of ‘being a man’ centred upon two themes: aggression and emotional impermeableness. imˈpermeably adv. so as to be impermeable. ΚΠ 1842 Provinc. Med. & Surg. Jrnl. 8 Jan. 285/2 You try to introduce a bougie or a catheter, but it will not enter the bladder, because the urethra is squeezed up impermeably by the abscess. 1909 Sci. Amer. 3 July 8/2 There may be but a mere burn—something quite superficial; yet some part of a wound..may become at once impermeably sealed. 2011 Independent (Nexis) 30 July The impermeably cool young German could manage only a fourth-placed finish on home turf last weekend. This entry has been updated (OED Third Edition, June 2019; most recently modified version published online March 2022). < adj.1661
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