benzidine yellow meaning

noun   A base used in preparing azo dyes; [Medicine] n : a crystalline base C 12 H 12 N 2 used esp. in making dyes and in a test for blood

[Medicine] n : a test for blood (as in feces) based on its production of a blue color in a solution of benzidine, sodium peroxide, and glacial acetic acid

Adjective: yellow (yellower,yellowest)   yelow Of the colour intermediate between green and orange in the colour spectrum; of something resembling the colour of an egg yo...

[Architecture] A family of inorganic yellow pigments, principally lead chromate, but blended with lead sulfate or other lead salts to produce a range of yellow-to-orange pigments.

[Architecture] A light yellow pigment; the true pigment is a basic antimonate of lead, but is imitated by mixtures.

[Architecture] A form of earth used as a yellow pigment; limonite.

[American slang] a tendency toward cowardice.    Tim's got a yellow streak down his back a mile wide.    Get rid of that yellow streak. Show some courage.

Noun: alizarin yellow    u'lizurin 'yelow Any of various yellow dyes; not related chemically to alizarin but applied in the same manner Derived forms: alizarin yellows ...

[Architecture] See Naples yellow .

Noun: brownish yellow A yellow colour of low lightness with a brownish tinge Adjective: brownish-yellow Of a medium to dark brownish yellow colour - amber , yellow-brown ...