Auramine – Definition & Meaning

Auramine is a term that is not commonly known to many people. However, it is an important term in the field of science and medicine. In this article, we will explore the definition, meaning, and associations of auramine.


Auramine is a yellow dye that is used in the staining of bacteria and other microorganisms. It is a fluorescent dye that is commonly used in microbiology to identify acid-fast bacteria such as Mycobacterium tuberculosis. Auramine is also used in the detection of fungi and parasites.


The origin of auramine can be traced back to the late 19th century when it was first synthesized by German chemist Paul Gerson Unna. He discovered that auramine could be used to stain certain types of bacteria. Since then, auramine has been widely used in microbiology and other scientific fields.

Meaning in different dictionaries

According to Merriam-Webster, auramine is defined as “a yellow fluorescent dye used especially in microscopy for the detection of acid-fast bacteria.” The Oxford English Dictionary defines auramine as “a yellow dye used to stain bacteria and other microorganisms.”


Auramine is commonly associated with the staining of bacteria and other microorganisms. It is also associated with the detection of acid-fast bacteria, which are difficult to stain using traditional methods.


Some synonyms of auramine include auramine O, basic yellow 2, and diamine yellow.


As auramine is a specific term, there are no antonyms associated with it.

The same root words

Auramine is derived from the Latin word aurum, which means gold. This is because the dye has a yellow-gold color.

Example Sentences

  • The microbiologist used auramine to identify the presence of acid-fast bacteria in the sample.
  • Auramine is a commonly used dye in microbiology for staining bacteria and other microorganisms.
  • The fluorescence of auramine makes it easier to detect the presence of certain microorganisms.
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