stain

stain
1) n. a dye used to colour tissues and other specimens for microscopical examination. In an acid stain the colour is carried by an acid radical and the stain is taken up by parts of the specimen having a basic (alkaline) reaction. In a basic stain the colour, carried by a basic radical, is attracted to parts of the specimen having an acidic reaction. Neutral stains have neither acidic nor basic affinities. A contrast stain is used to give colour to parts of a tissue not affected by a previously applied stain. A differential stain allows different elements in a specimen to be distinguished by staining them in different colours.
2) vb. to treat a specimen for microscopical study with a stain.

The new mediacal dictionary. 2014.

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  • stain´er — stain «stayn», verb, noun. –v.t. 1. to discolor (something); spot; soil: »The tablecloth is stained where food has been spilled. Let not women s weapons, waterdrops, Stain my man s cheeks (Shakespeare). 2. Figurative. a) o spot by wrongdoing or… …   Useful english dictionary

  • Stain — (st[=a]n), v. t. [imp. & p. p. {Stained} (st[=a]nd); p. pr. & vb. n. {Staining}.] [Abbrev. fr. distain.] 1. To discolor by the application of foreign matter; to make foul; to spot; as, to stain the hand with dye; armor stained with blood. [1913… …   The Collaborative International Dictionary of English

  • Stain — Stain, n. 1. A discoloration by foreign matter; a spot; as, a stain on a garment or cloth. Shak. [1913 Webster] 2. A natural spot of a color different from the gound. [1913 Webster] Swift trouts, diversified with crimson stains. Pope. [1913… …   The Collaborative International Dictionary of English

  • stain — [stān] vt. [ME stainen, aphetic < disteinen,DISTAIN: sense and form infl. by ON steinn, color, lit., STONE (hence, mineral pigment)] 1. to spoil the appearance of by patches or streaks of color or dirt; discolor; spot 2. to bring shame upon… …   English World dictionary

  • Stain — Stain, v. i. To give or receive a stain; to grow dim. [1913 Webster] …   The Collaborative International Dictionary of English

  • Stain — ist der Familienname folgender Personen: Johann Friedrich von Stain (1681–1735), braunschweigischer und hessischer Staatsmann Walter Stain (1916–2001), deutscher Politiker Diese Seite ist eine Begriffsklärung zur Unterscheidung mehrerer mit demse …   Deutsch Wikipedia

  • stain — [n] spot of dirt, blot, bar black eye*, blemish, blotch, blur, brand, color, discoloration, disgrace, dishonor, drip, dye, infamy, ink spot, mottle, odium, onus, reproach, shame, sinister*, slur, smirch, smudge, spatter, speck, splotch, spot,… …   New thesaurus

  • Stain — Stain, Stadt, so v.w. Stein 2) …   Pierer's Universal-Lexikon

  • stain — I verb attaint, bedaub, befoul, besmear, besmirch, blacken, blemish, blot, blotch, bring reproach upon, color, contaminate, corrupt, damage, daub, debase, defame, defile, detract from, dirty, discolor, discredit, disgrace, dishonor, dye, grime,… …   Law dictionary

  • stain — n *stigma, blot, brand Analogous words: *blemish, defect, flaw: mark, *sign, token: *disgrace, dishonor …   New Dictionary of Synonyms

  • stain — ► VERB 1) mark or discolour with something that is not easily removed. 2) damage (someone s or something s reputation). 3) colour with a penetrative dye or chemical. ► NOUN 1) a stubborn discoloured patch or dirty mark. 2) a thing that damages a… …   English terms dictionary

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