#aritmo

• Arithmo- — A combining form (prefixoid) borrowed from Ancient Greek (arithmos), used in scientific, technical, or medical terminology with the meaning of 'number', 'numerical calculation' or, by medical extension, 'rhythm' (structurally derived from its correlation with countable heartbeats). It serves to form niche compound words, such as aritmomanie, aritmograf, or aritmologie.
• 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.
• Arithmograph — An old mechanical apparatus or device used for automatically performing and graphically recording or printing primary arithmetic calculations. In the history of computing technology, the instrument represents an essential intermediate step between the abacus and modern electric calculating machines, used in accounting and statistics during the late 19th and early 20th centuries.
• Arithmography — A rare neologistic term designating the study, description, or graphical representation of numbers and the arithmetic relationships between them. In some historical or occult contexts, it may refer to a method of calculation or symbolic interpretation of texts by converting letters into numerical values, similar to gematria.
• Arithmogriph — A puzzle or crossword game in which letters are replaced by numbers according to a set key; a cryptogram or coded crossword. Solving it requires identifying the unique correspondence between each number and its associated letter to reconstruct the hidden words or message.
• 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.
• Arithmomanic — A person (male) suffering from arithmomania, an obsessive-compulsive disorder manifested by the irresistible urge and pathological impulse to continuously count objects, words, steps, or daily actions, or to perform useless mathematical calculations. As an adjective, it describes behavior, a structural fixation, or an attitude characteristic of this obsessive neurosis.
• Arithmomaniac — A female person suffering from arithmomania; a woman affected by an obsessive-compulsive disorder manifested by an irresistible and pathological impulse to repeatedly count objects, actions, words, or elements in the surrounding environment. As an adjective, it describes a manifestation, attitude, or behavioral trait marked by the compulsive obsession with useless counting and mathematical calculations.
• Arithmomania — A form of obsessive-compulsive disorder (OCD) consisting of an individual's irresistible and obsessive need to count everything they see or hear, or to perform constant and useless mental mathematical calculations. Affected individuals feel deep anxiety if interrupted from this ritual, subconsciously believing that failing to complete the count (such as counting steps, building windows, or lampposts) can cause a disaster.
• Arithmometer — The first industrial mechanical calculating machine capable of performing the four fundamental arithmetic operations (addition, subtraction, multiplication, and division), patented in 1820 by the Frenchman Thomas de Colmar. This robust device, based on stepped drums with teeth of variable lengths, dominated administrative and banking offices worldwide for nearly a century, representing the technological grandfather of modern desktop calculators.