overstainv.

Brit.

/ˌəʊvəˈsteɪn/, U.S.

/ˌoʊvərˈsteɪn/

Forms: see over- prefix and stain v.

Origin: Formed within English, by derivation. Etymons: over- prefix, stain v.

Etymology: < over- prefix + stain v. With sense 2 compare slightly earlier overstaining n.

†1. transitive. Chiefly literary. To cover over with a stain; to stain completely. Obsolete.

ΘΚΠ

the world > space > relative position > condition of being external > covering > cover [verb (transitive)] > with or as with specific other things

clodc1420

pavea1425

foamc1540

overstain1559

thatch1589

sinew1592

to ice over1602

curd1654

overfleece1717

fleece1730

stucco1774

oversmoke1855

bepaper1861

beboulder1862

overflower1876

sack1880

overglass1883

to board over1885

pad1885

lather1917

cobweb1928

1559 J. Heywood tr. Seneca Troas ii. ii. sig. B.vi^v Unto my ashes Polyxene, spoused shal here be slaine, By Pyrrhus hand, and all my tombe her blood shal ouerstayne.

a1592 R. Greene Plays & Poems (1905) 243 Vertues are oft farre ouerstain'd with faults.

a1616 W. Shakespeare King John (1623) iii. i. 162 Our hands..besmear'd and ouer-staind With slaughters pencill.

1821 E. H. Thurlow Select Poems 65 Harold on the bleeding verdure lay, Though great in glory, overstain'd with crime.

2. transitive and intransitive. Histology. To stain (tissue) using more staining medium than is necessary, esp. in order that certain parts may be differentiated by selective removal of some of the stain. (In quot. 1883: to become excessively stained.)

ΘΚΠ

the world > life > biology > laboratory analysis > processes > [verb (transitive)] > using stains or dyes

overstain1883

plate1892

counterstain1895

osmicate1905

polychrome1924

prime1943

sham-operate1963

tissue-type1968

perifuse1969

1883 Science 21 Dec. 803/1 The iron may remain in the tissues, and cause them to overstain with coloring-reagents.

1885 C. O. Whitman Methods of Res. in Microsc. Anat. ii. 39 If by any chance the sections are over-stained, the superfluous color may be extracted by a brief sojourn in very dilute ammonia.

1935 B. F. Kingsbury & O. A. Johannsen Histol. Technique 40 The rule is to over-stain and watch the differentiation carefully with the microscope.

1945 J. R. Baker Cytol. Technique (ed. 2) 143 One may stain regressively, that is, overstain and remove the excess.

1990 EMBO Jrnl. 9 2591/1 Low level expression can only be observed in stripes 4 and 1 if the embryos are overstained.

This entry has been updated (OED Third Edition, December 2004; most recently modified version published online March 2022).

单词	overstain
释义	overstainv. Brit. /ˌəʊvəˈsteɪn/, U.S. /ˌoʊvərˈsteɪn/ Forms: see over- prefix and stain v. Origin: Formed within English, by derivation. Etymons: over- prefix, stain v. Etymology: < over- prefix + stain v. With sense 2 compare slightly earlier overstaining n. †1. transitive. Chiefly literary. To cover over with a stain; to stain completely. Obsolete. ΘΚΠ the world > space > relative position > condition of being external > covering > cover [verb (transitive)] > with or as with specific other things clodc1420 pavea1425 foamc1540 overstain1559 thatch1589 sinew1592 to ice over1602 curd1654 overfleece1717 fleece1730 stucco1774 oversmoke1855 bepaper1861 beboulder1862 overflower1876 sack1880 overglass1883 to board over1885 pad1885 lather1917 cobweb1928 1559 J. Heywood tr. Seneca Troas ii. ii. sig. B.vi^v Unto my ashes Polyxene, spoused shal here be slaine, By Pyrrhus hand, and all my tombe her blood shal ouerstayne. a1592 R. Greene Plays & Poems (1905) 243 Vertues are oft farre ouerstain'd with faults. a1616 W. Shakespeare King John (1623) iii. i. 162 Our hands..besmear'd and ouer-staind With slaughters pencill. View more context for this quotation 1821 E. H. Thurlow Select Poems 65 Harold on the bleeding verdure lay, Though great in glory, overstain'd with crime. 2. transitive and intransitive. Histology. To stain (tissue) using more staining medium than is necessary, esp. in order that certain parts may be differentiated by selective removal of some of the stain. (In quot. 1883: to become excessively stained.) ΘΚΠ the world > life > biology > laboratory analysis > processes > [verb (transitive)] > using stains or dyes overstain1883 plate1892 counterstain1895 osmicate1905 polychrome1924 prime1943 sham-operate1963 tissue-type1968 perifuse1969 1883 Science 21 Dec. 803/1 The iron may remain in the tissues, and cause them to overstain with coloring-reagents. 1885 C. O. Whitman Methods of Res. in Microsc. Anat. ii. 39 If by any chance the sections are over-stained, the superfluous color may be extracted by a brief sojourn in very dilute ammonia. 1935 B. F. Kingsbury & O. A. Johannsen Histol. Technique 40 The rule is to over-stain and watch the differentiation carefully with the microscope. 1945 J. R. Baker Cytol. Technique (ed. 2) 143 One may stain regressively, that is, overstain and remove the excess. 1990 EMBO Jrnl. 9 2591/1 Low level expression can only be observed in stripes 4 and 1 if the embryos are overstained. This entry has been updated (OED Third Edition, December 2004; most recently modified version published online March 2022). < v.1559
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