1. trans. To press closely into or in something; to fix firmly in; to pack in.
1601 HOLLAND Pliny XX. xxi. II. 73 The seed of this hearbe remooveth the tough humours bedded in the stomacke, how hard impacted soever they be. 1709 BLAIR in Phil. Trans. XXVII. 75 These Pyramids, which receive the Hairs, are impacted in the Cutis. a1791 WESLEY Serm. lxxxii. I. 5 Wks. 1811 IX. 417 Impact fire into iron, by hammering it when red hot. 1897 ALLBUTT Syst. Med. III. 835 A stone-like mass..which had become impacted in the lower ilium.
2. To stamp or impress (on something). rare.
1677 GALE Crt. Gentiles IV. Proem 4 Ideas or notions impacted on the mind. Ibid. 442 Every..Creature has a law impacted or impressed on its Being.
3. intr. a. To come forcibly into contact with a (larger) body or surface. Const. various preps.
1916 [see IMPACTING ppl. a. below]. 1929 ‘SEAMARK’ Down River vi. 172 Something impacted with a soft thud against Lingard's temple. 1945 Jrnl. Sci. Instrum. XXII. 191 A jet of air issuing from a slot and impacting on a plane surface. 1962 F. I. ORDWAY et al. Basic Astronautics v. 201 The Soviet Lunnaya Raketa was launched early in the afternoon of September 12, 1959 and impacted onto the Moon's surface just after midnight on September 14, Moscow time.
b. fig. To have a (pronounced) effect on.
1935 W. G. HARDY Father Abraham 370 For there was about them an air of eagerness and of shuddering expectation which impacted on his consciousness and fascinated even while it repelled him. 1956 Oxf. Mag. 8 Nov. 81/1 The Magazine.. is not the place for consideration of national and international events except in so far as they impact on Oxford.
4. trans. To cause to impinge or impact on, against, etc.
1945 Jrnl. Sci. Instrum. XXII. 187 Experimental results for the efficiency of jets in impacting particles are correlated. 1964 K. STEWART in White & Smith High-Efficiency Air Filtration ii. 57 All impactors make use of the inertia effect which particles exhibit when the gas stream in which they are suspended is constrained to turn abruptly. The particle under suitable conditions cannot follow the stream lines and is impacted against a collecting plate. 1972 J. O. LEDBETTER Air Pollution A. v. 187 An aerosol moving toward an obstacle may impact particles on the obstacle.
Hence impacting ppl. a., impinging, colliding.
1916 ‘BOYD CABLE’ Action Front 95 No ping and smack of impacting lead hailed about them. 1961 Sci. Amer. Nov. 58/2 The impacting bodies may have been asteroids or comets. 1972 Daily Tel. 17 Apr. 6/8 These particles..cannot be measured or analysed from the Earth's surface. On the Moon, however, the impacting particles leave trails in the detector. 1973 Nature 13 July 68/2 Craters of the size of St Magnus Bay and The Firth would be formed by impacting meteorites of masses about 1 million tons.
1 comment:
Quite some time ago according to the OED
1. trans. To press closely into or in something; to fix firmly in; to pack in.
1601 HOLLAND Pliny XX. xxi. II. 73 The seed of this hearbe remooveth the tough humours bedded in the stomacke, how hard impacted soever they be. 1709 BLAIR in Phil. Trans. XXVII. 75 These Pyramids, which receive the Hairs, are impacted in the Cutis. a1791 WESLEY Serm. lxxxii. I. 5 Wks. 1811 IX. 417 Impact fire into iron, by hammering it when red hot. 1897 ALLBUTT Syst. Med. III. 835 A stone-like mass..which had become impacted in the lower ilium.
2. To stamp or impress (on something). rare.
1677 GALE Crt. Gentiles IV. Proem 4 Ideas or notions impacted on the mind. Ibid. 442 Every..Creature has a law impacted or impressed on its Being.
3. intr. a. To come forcibly into contact with a (larger) body or surface. Const. various preps.
1916 [see IMPACTING ppl. a. below]. 1929 ‘SEAMARK’ Down River vi. 172 Something impacted with a soft thud against Lingard's temple. 1945 Jrnl. Sci. Instrum. XXII. 191 A jet of air issuing from a slot and impacting on a plane surface. 1962 F. I. ORDWAY et al. Basic Astronautics v. 201 The Soviet Lunnaya Raketa was launched early in the afternoon of September 12, 1959 and impacted onto the Moon's surface just after midnight on September 14, Moscow time.
b. fig. To have a (pronounced) effect on.
1935 W. G. HARDY Father Abraham 370 For there was about them an air of eagerness and of shuddering expectation which impacted on his consciousness and fascinated even while it repelled him. 1956 Oxf. Mag. 8 Nov. 81/1 The Magazine.. is not the place for consideration of national and international events except in so far as they impact on Oxford.
4. trans. To cause to impinge or impact on, against, etc.
1945 Jrnl. Sci. Instrum. XXII. 187 Experimental results for the efficiency of jets in impacting particles are correlated. 1964 K. STEWART in White & Smith High-Efficiency Air Filtration ii. 57 All impactors make use of the inertia effect which particles exhibit when the gas stream in which they are suspended is constrained to turn abruptly. The particle under suitable conditions cannot follow the stream lines and is impacted against a collecting plate. 1972 J. O. LEDBETTER Air Pollution A. v. 187 An aerosol moving toward an obstacle may impact particles on the obstacle.
Hence impacting ppl. a., impinging, colliding.
1916 ‘BOYD CABLE’ Action Front 95 No ping and smack of impacting lead hailed about them. 1961 Sci. Amer. Nov. 58/2 The impacting bodies may have been asteroids or comets. 1972 Daily Tel. 17 Apr. 6/8 These particles..cannot be measured or analysed from the Earth's surface. On the Moon, however, the impacting particles leave trails in the detector. 1973 Nature 13 July 68/2 Craters of the size of St Magnus Bay and The Firth would be formed by impacting meteorites of masses about 1 million tons.
Post a Comment