Definition: The term "acodon" comes from Latin acdonum, meaning "the name given to the first element in the chemical formula." The German chemist Peter Neumann was the first to use the term. In chemistry, "acoronene" is a type of aliphatic ring structure that corresponds to the rings shown on the periodic table. This ring forms an acroneme or a single-ring molecule, which has the property of being nonpolar and thus nonionic. The word 'acid' refers to any substance whose chemical properties are altered by another substance (e.g., the pH). Acidic substances include bases, such as hydrochloric acid. A neutral substance is one that does not possess a net positive or negative charge; neutral compounds, for example, H2O and NaOH are examples of nonacidic substances. The word 'ammonium' refers to the nitrogenous compound NH3. Ammonium is commonly used in fertilizer to enhance plant growth. A monoisotopic substance (also called an isotope) consists of atoms with different numbers of protons but the same atomic number; they are not isotopically bound together. The word 'ammonia' refers to the nitrogenous compound NH4+ or NH3+. Ammonium ion, also known as ammonium chloride or ammonium nitrate (NH4Cl), is a common chemical reagent used for the preparation of fertilizers.

acondylose