How Do You Spell QUINOIDINE?

Pronunciation: [kwˈɪnɔ͡ɪdˌiːn] (IPA)

The spelling of the word "quinoidine" may seem confusing at first glance, but it can be broken down using the International Phonetic Alphabet. The "qui" is pronounced as "kwai" /kweɪ/, indicating the presence of both the "k" and "w" sounds. The "noi" is pronounced as "noy" /nɔɪ/, and the "di" is pronounced as "dine" /daɪn/. Combining these sounds gives us the pronunciation of "kwaɪˈnɔɪdaɪn". Quinoidine is a brown substance obtained from cinchona bark and used in medicine.

QUINOIDINE Meaning and Definition

1. Quinoidine is a term that refers to a type of resinous substance that is derived from the bark of various species of trees in the genus Cinchona, particularly Cinchona succirubra. It is primarily composed of a complex mixture of alkaloids, the most notable of which is quinine.

   Quinoidine has historically been used as a natural source of quinine, which possesses strong antimalarial properties. In the 19th century, when the isolation and synthesis of quinine was not yet possible, quinoidine was a crucial ingredient in producing quinine-based medications. It was a valuable remedy against malaria, a disease caused by the Plasmodium parasite and transmitted through mosquito bites.

   The extraction of quinoidine involves crushing and soaking the bark of Cinchona trees in a solvent, typically alcohol, to dissolve the alkaloids. The resulting solution is then filtered and evaporated, leaving behind a sticky, dark-brown or blackish residue. This residue, known as quinoidine, is often further processed to obtain purified quinine.

   Although the use of quinoidine has declined with advances in pharmaceutical technology, it still holds historical and medicinal significance. Due to its characteristic alkaloid content, it continues to be studied for potential applications in modern medicine. Additionally, the term "quinoidine" may also be used broadly to describe any resinous substance that resembles or is chemically related to the original bark-derived product.

2. A resinous substance obtained from the mother liquors of the quinine manufacturers, remaining after all the crystals of quinine that can be separated are obtained; called also amorphous quinine.

   Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.

Common Misspellings for QUINOIDINE

• quinoixine

Etymology of QUINOIDINE

The word "quinoidine" derives from the combination of two elements: "quin-" and "-oidine".

1. "Quin-" refers to the chemical compound "quinine", which is an alkaloid originally extracted from the bark of the cinchona tree. Quinine has antimalarial properties and was historically used to treat malaria.

2. "-oidine" is a suffix used to denote a substance that is similar to or derived from something else. It is derived from the Greek word "eidos", meaning "resemblance" or "shape".

So, when combining "quin-" and "-oidine", "quinoidine" essentially means a substance or compound that is reminiscent of or related to quinine. In fact, quinoidine is an impure form of quinine that was obtained during the extraction process from the cinchona bark.

Plural form of QUINOIDINE is QUINOIDINES