Allantoic acid – Definition & Meaning

Allantoic acid is a chemical compound that has gained significant attention in the scientific community due to its various applications in the field of medicine and agriculture. In this article, we will explore the definition and meaning of allantoic acid, its origin, associations, synonyms, antonyms, and example sentences.


Allantoic acid is a white, odorless, crystalline powder that is soluble in water and alcohol. It is a metabolite of uric acid and is found in the urine of many animals, including birds, reptiles, and mammals.
In biological terms, allantoic acid is a nitrogenous waste product that is formed during the development of embryos in the uterus of mammals.


The word “allantoic” is derived from the Greek word “allantos,” which means sausage. The term “allantoic acid” was first coined in the 19th century by French chemist Adrien Albert.
Allantoic acid is found in the allantois, a sac-like structure that develops in the embryos of reptiles, birds, and mammals. It is also present in the urine of these animals.

Meaning in different dictionaries

According to the Merriam-Webster dictionary, allantoic acid is defined as “a crystalline acid C4H6N4O4 that is derived from uric acid and is found especially in the urine of birds and reptiles.”
The Oxford dictionary defines allantoic acid as “a nitrogenous compound found in the urine of birds and reptiles, formed by oxidation of uric acid.”


Allantoic acid has various applications in the field of medicine and agriculture. It is used as a growth factor in cell culture and as a component of wound healing dressings. In agriculture, allantoic acid is used as a fertilizer and soil conditioner.


Some synonyms of allantoic acid include:

  • 2,5-Dioxo-4-imidazolidinecarboxylic acid.
  • Allanturic acid.
  • Glyoxylic ureide.
  • Ureidoacetic acid.


As allantoic acid is a chemical compound, it does not have any antonyms.

The same root words

Allantoic acid is derived from the root word “allantos,” which means sausage in Greek. This root word is also found in other words such as allantois, allantoid, and allantoin.

Example Sentences

Here are some example sentences that use the word allantoic acid:

  • Allantoic acid is a byproduct of uric acid metabolism.
  • The allantoic acid in bird droppings is a valuable source of fertilizer.
  • The wound dressing contains allantoic acid, which promotes healing.
  • Scientists are studying the effects of allantoic acid on cell growth and differentiation.
  • The allantoic acid in the urine of pregnant women is a marker of fetal health.
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