dye (redirected from dyeing)

dye (di) any colored substance containing auxochromes and thus capable of coloring substances to which it is applied; used for staining and coloring, as a test reagent, and as a therapeutic agent.

---

acid dye , acidic dye one which is acidic in reaction and usually unites with positively charged ions of the material acted upon.

amphoteric dye  one containing both reactive basic and reactive acidic groups, and staining both acidic and basic elements.

anionic dye  acid d.

basic dye  one which is basic in reaction and unites with negatively charged ions of the material acted upon.

cationic dye  basic d.

---

dye (d)

n.

A substance used to color materials or substances, such as cells, tissues, and microorganisms.

---

dye

any of various colored substances containing auxochromes and thus capable of coloring substances to which they are applied; used for staining and coloring, as test reagents, and as therapeutic agents.

---

acridine dye

acriflavine and proflavine are antiseptic dyes.

azo dye

dyes like scarlet red and phenazopyridine are used as antiseptics to be applied topically or as urinary antiseptics.

diagnostic dye

several diagnostic test procedures involve the administration of a dye and determination of the rate of excretion, either by measuring levels remaining in the body or amounts excreted in the urine, feces, etc. Examples are the bromsulfthalein (BSP) test for liver function, and the phenolsulfonphthalein (PSP) renal function test.

dye dilution method

the standard method of measuring circulating plasma volume; based on the degree of dilution of a physiologically inert dye injected intravenously.

vital dye

see vital stain.