#numb

• Arithmetician — A specialist in arithmetic; a mathematician dedicated to the study of numbers, their properties, and fundamental numerical operations. In a historical and academic sense, the term describes a person who masters the art of computation and numerical algorithms, contributing to the development of the theoretical foundations of elementary mathematics or number theory.
• Arithmophobia — A pathological, irrational, and persistent fear of numbers, digits, or performing arithmetic calculations. This specific anxiety disorder can manifest through panic attacks, sweating, and an intense desire to avoid situations involving interaction with statistical data, prices, phone numbers, or mathematical equations, significantly affecting the individual's daily and professional life.
• Arithmology — The theoretical or philosophical study of numbers and the religious, mystical, or occult properties attributed to them, beyond their purely mathematical calculating value. In the history of science, the term often describes Pythagorean or Kabbalistic esoteric systems that interpreted the universe through a sacred numerical structure, but it can also denote an archaic branch dealing with the systematic classification of names and numerical concepts.
• Arsenic — A chemical element with atomic number 33 and symbol As, located in group 15 of the periodic table, classified as a metalloid with properties intermediate between metals and non-metals. It occurs in several allotropic forms (the most stable being grey arsenic, with a metallic luster), is a semiconductor used in microelectronics and optoelectronics, and, in compound forms, is historically recognized as an extremely dangerous cellular toxin with severe industrial uses.
• Deafened — Having suffered a total or partial loss of hearing, temporarily or permanently, under the impact of an intense noise, acoustic trauma, or medical condition; structurally deprived of the faculty to clearly perceive sound vibrations and left in a state of acoustic blockage or numbness.
• At — The official chemical symbol for the element astatine, an extremely rare and unstable radioactive halogen with atomic number 85. In modern periodic tables, At represents the heaviest characterized element in the halogen group, whose physical and chemical properties are theoretically deduced or microscopically observed in high-energy nuclear physics laboratories due to its very short half-life.
• Avogadro — The surname of the celebrated Italian physicist and chemist Amedeo Avogadro (1776–1856), globally recognized for his fundamental contributions to the development of molecular theory. In exact sciences, his name is directly associated with 'Avogadro's number' and 'Avogadro's law', essential constants and structural principles defining the proportions between gas volume and the number of molecules contained at a given pressure and temperature.
• Nitrogen — A gaseous chemical element, colorless, odorless, and tasteless, with atomic number 7 and symbol N, constituting approximately 78% of the Earth's atmosphere by volume; it is a fundamental component of amino acids, proteins, and nucleic acids, essential for all living organisms and widely used in industry in liquid form as a cryogenic agent or within chemical fertilizers.
• Balaam — A biblical character from the Old Testament (Book of Numbers), a prophet or diviner of Mesopotamian origin, famous for the episode where his donkey speaks to him after seeing an angel sent by God. Structurally hired by the King of Moab to curse the Israelites, Balaam ends up blessing them at divine command, his name becoming a theological symbol for oscillating between material greed and spiritual obedience.