countercurrentadj.

Etymology: Compare counter-current n.Previous versions of the OED give the stress as: counterˈcurrent.

Running counter or opposite. Also = counter-courant adj. at counter- prefix 2m(a).

ΘΚΠ

the world > space > direction > [adjective] > having opposite direction

opposite1594

contrary1605

contrariant1644

controversal1644

countercurrent1799

1799 R. Kirwan Geol. Ess. 281 Sometimes their course is directly opposite, or counter-current.

1830 T. Robson Brit. Herald III. Gloss. Counter-current..running in contrary directions.

Draft additions 1993

Forms: Also counter-current.

Frequency (in current use):

2. Involving currents flowing in opposite directions.

ΘΚΠ

the world > matter > liquid > liquid flow > action or process of flowing > [adjective] > in opposite directions

countercurrent1911

1911 Encycl. Brit. XX. 48/2 In the case of cold extraction the seed is placed in a series of closed vessels, through which the solvent percolates by displacement, on the ‘counter-current’ system.

1940 Rep. Progress Physics 6 59 In order to multiply the smaller differences in chemical properties it is necessary to make use of two-phase counter-current methods.

1970 S. Harland Counter-Current Extraction i. 1 This book considers..the transfer of a single solute between two immiscible phases in counter-current flow.

1984 J. F. Lamb et al. Essent. Physiol. (ed. 2) viii. 202 This gradient is set up because the long loops of Henle of the juxtamedullary nephrons and the collecting ducts act with their associated blood vessels.. as a counter current system.

Draft additions 1993

= countercurrently adv. at Additions below.

ΘΚΠ

the world > matter > liquid > liquid flow > action or process of flowing > [adverb] > in or with opposite directions of flow

countercurrent1922

countercurrently1930

1922 Jrnl. Industr. & Engin. Chem. June 476/1 The capacity of a fractionating column is defined as a measure of the amount of vapor and liquid which can be passed countercurrent to each other in a column without causing the column to load or prime.

1939 Biochem. Jrnl. 33 1918 An extraction train in which water and chloroform flow counter-current at a controlled flow-ratio.

1972 Materials & Technol. V. x. 283 The weaker lyes..are pumped from vessel to vessel, in such a manner that they pass counter-current to the soap.

Draft additions 1993

counterˈcurrently adv. in a countercurrent way; in or with opposite directions of flow.

ΘΚΠ

the world > matter > liquid > liquid flow > action or process of flowing > [adverb] > in or with opposite directions of flow

countercurrent1922

countercurrently1930

1930 Industr. & Engin. Chem. Mar. 221/2 Cooling is effected by the cold extract flowing countercurrently in its passage from the extract tank to the preheater.

1935 Industr. & Engin. Chem. Oct. 1213/1 Consider a series of n of these ideal exchangers working countercurrently.

1976 Sci. Amer. Dec. 31/2 (caption) Its height was needed so that process streams of organic and aqueous solutions could flow countercurrently by gravity through extraction columns.

This entry has not yet been fully updated (first published 1893; most recently modified version published online June 2019).

单词	countercurrent
释义	countercurrentadj. Etymology: Compare counter-current n.Previous versions of the OED give the stress as: counterˈcurrent. Running counter or opposite. Also = counter-courant adj. at counter- prefix 2m(a). ΘΚΠ the world > space > direction > [adjective] > having opposite direction opposite1594 contrary1605 contrariant1644 controversal1644 countercurrent1799 1799 R. Kirwan Geol. Ess. 281 Sometimes their course is directly opposite, or counter-current. 1830 T. Robson Brit. Herald III. Gloss. Counter-current..running in contrary directions. Draft additions 1993 Forms: Also counter-current. Frequency (in current use): Show frequency band information 2. Involving currents flowing in opposite directions. ΘΚΠ the world > matter > liquid > liquid flow > action or process of flowing > [adjective] > in opposite directions countercurrent1911 1911 Encycl. Brit. XX. 48/2 In the case of cold extraction the seed is placed in a series of closed vessels, through which the solvent percolates by displacement, on the ‘counter-current’ system. 1940 Rep. Progress Physics 6 59 In order to multiply the smaller differences in chemical properties it is necessary to make use of two-phase counter-current methods. 1970 S. Harland Counter-Current Extraction i. 1 This book considers..the transfer of a single solute between two immiscible phases in counter-current flow. 1984 J. F. Lamb et al. Essent. Physiol. (ed. 2) viii. 202 This gradient is set up because the long loops of Henle of the juxtamedullary nephrons and the collecting ducts act with their associated blood vessels.. as a counter current system. Draft additions 1993 = countercurrently adv. at Additions below. ΘΚΠ the world > matter > liquid > liquid flow > action or process of flowing > [adverb] > in or with opposite directions of flow countercurrent1922 countercurrently1930 1922 Jrnl. Industr. & Engin. Chem. June 476/1 The capacity of a fractionating column is defined as a measure of the amount of vapor and liquid which can be passed countercurrent to each other in a column without causing the column to load or prime. 1939 Biochem. Jrnl. 33 1918 An extraction train in which water and chloroform flow counter-current at a controlled flow-ratio. 1972 Materials & Technol. V. x. 283 The weaker lyes..are pumped from vessel to vessel, in such a manner that they pass counter-current to the soap. Draft additions 1993 counterˈcurrently adv. in a countercurrent way; in or with opposite directions of flow. ΘΚΠ the world > matter > liquid > liquid flow > action or process of flowing > [adverb] > in or with opposite directions of flow countercurrent1922 countercurrently1930 1930 Industr. & Engin. Chem. Mar. 221/2 Cooling is effected by the cold extract flowing countercurrently in its passage from the extract tank to the preheater. 1935 Industr. & Engin. Chem. Oct. 1213/1 Consider a series of n of these ideal exchangers working countercurrently. 1976 Sci. Amer. Dec. 31/2 (caption) Its height was needed so that process streams of organic and aqueous solutions could flow countercurrently by gravity through extraction columns. This entry has not yet been fully updated (first published 1893; most recently modified version published online June 2019). > see also also refers to : counter-currentn. < adj.1799 see also
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countercurrentadj.

Draft additions 1993

Draft additions 1993

Draft additions 1993

> see also