#composition

• Alvanite — A formal variant or structural feminine adaptation of the term 'alvanit', sometimes used in older technical literature or mineralogical translations; a rock or mineral aggregate composed predominantly of this hydrated vanadate. It represents a compound of purely scientific and collecting interest due to its extreme rarity in the Earth's crust.
• Ammonification — The biological and chemical process of decomposing nitrogenous organic substances (such as proteins, amino acids, or urea from plant and animal residues) by soil microorganisms (ammonifying bacteria and fungi), resulting in the release of nitrogen as ammonia or ammonium ions. This stage is fundamental within the natural nitrogen cycle, transforming complex compounds into mineral forms accessible to plants.
• To write anacreontics — To write verses or poetry in the style of Anacreon; to introduce a gallant, festive, and hedonistic atmosphere into a literary work, focused on the celebration of love and wine. In a structural sense, the action involves adopting the metrical and thematic techniques specific to anacreontism, transforming the poetic discourse into a praise of the ephemeral joys of earthly existence.
• Andesite — An effusive (volcanic) igneous rock with a microlitic or porphyritic texture, gray, brown, or greenish in color, mainly composed of plagioclase feldspar (such as andesine) and ferromagnesian minerals (amphiboles, pyroxenes, or biotite). It has a wide distribution in eruption areas and is intensely used in construction as dimension stone, paving, gravel, or structural aggregate due to its hardness.
• Anthem — A solemn musical piece, a national or religious anthem, or a polyphonic choral composition specific to the Anglican liturgy; in a modern cultural sense, a highly emotional song that defines a generation, group, or movement.
• Antimonial — Containing antimony (stibium), relating to antimony, or obtained from this metalloid; a chemical preparation, alloy, or medicinal compound whose structure includes antimony. In the history of pharmacy, it describes specific remedies used as emetics (to induce vomiting) or as antiparasitic treatments in early veterinary and human medicine.
• Antiputrefactive — Preventing, halting, or combating putrefaction; a chemical substance or pharmaceutical preparation that destroys bacteria and microorganisms causing the decomposition of organic tissues. In a medical and antiseptic sense, it describes disinfecting agents that prevent the septic degradation of wounds, ensuring the preservation of biological structures or the sanitization of surfaces exposed to microbial contamination.
• Appoggiatura — A secondary ornamental musical note, lacking its own temporal value within the measure, which precedes a main long note and is executed rapidly, borrowing a portion of its time value; an expressive melodic embellishment. This harmonic structure creates a transient dissonance followed immediately by a consonant resolution on the base sound, specific to Baroque and Classical styles.
• Arenite — A clastic or detrital sedimentary rock composed of medium-grained mineral particles, with diameters structurally ranging from 0.0625 to 2 millimeters (sand-sized particles), cemented within a fine matrix. Unlike wacke, an arenite contains less than 15% interstitial clay matrix, being strictly classified based on grain composition into quartz, feldspathic, or lithic arenite.
• Argentite — A mineral from the sulfide class, composed of silver sulfide with the chemical formula Ag2S, structurally stable only at temperatures above 173°C. At ambient temperatures, it transforms through pseudomorphosis into acanthite (its stable monoclinic modification), while retaining its initial outer cubic form. Industrially, it is an extremely important silver ore, featuring a dark grey to black color, a bright metallic luster, and high density.
• Architectonic — Belonging to architecture, relating to the constructive rules, structure, or artistic composition of a building or monument; structural, tectonic. In philosophy (especially with Immanuel Kant), the term (as a feminine noun: arhitectonica) denotes the art or method of building coherent scientific systems, unifying disparate knowledge under a single guiding idea to form a logical, organized, and harmonious whole.
• Background — The furthest plane in a visual composition, painting, photograph, or theatrical stage, which serves as a background for elements or characters in the foreground; figuratively, the term designates the hidden context, secondary position, or marginal background in which an event, idea, or person is placed.
• Arpeggio — A musical chord whose constituent notes are played successively and distinctly, in ascending or descending order, rather than being heard simultaneously. It represents a fundamental element in instrumental technique study and the construction of melodic lines or accompaniments, frequently used in classical, jazz, rock, and electronic music to add motion and texture to the composition.
• Astrospectroscopy — An elite branch of practical astrophysics dealing with the photography, digital recording, and structural analysis of the electromagnetic radiation spectra emitted or absorbed by celestial bodies. By decomposing stellar light using prisms or diffraction gratings attached to telescopes, astrospectroscopy enables the determination of chemical composition, temperature, pressure, radial velocity, and magnetic field strength of objects in the universe.
• Atonal — Not belonging to a specific key, characterized by the absence of a tonal center of reference (the tonic) and traditional harmonic rules based on major and minor modes. In modern music, the term describes compositions where all twelve notes of the octave are treated as structurally equal, generating intentional dissonance.
• Attacca — A musical direction or term (of Italian origin) placed by the composer at the end of a movement within a complex composition, instructing the performers to begin the next movement immediately without any pause or structural interruption. This technical method ensures dramatic continuity and a fluid tension throughout the symphonic or chamber work.
• Axiality — The quality or state of being axial; a structural, compositional, or geometric organization based on one or more governing axes. In architecture and urban planning, it represents a fundamental aesthetic principle used to create order, balance, and monumentality, guiding sightlines and circulation through a rigorous alignment of volumes, facades, or public spaces relative to a central axis.
• Bagatelle — A rare neologistic form or partially adapted variant for a bagatelle; a short, light piece of instrumental music, typically for the piano. In a broad bookish sense, it can describe a trifle or a matter of insignificant value.
• Bagatelle — A rare neologistic form or partially adapted variant for a bagatelle; a short, light piece of instrumental music, typically for the piano. In a broad bookish sense, it can describe a trifle or a matter of收拾 insignificant value.
• Bagatelle — A matter of little importance, a trifle, or an insignificant issue in conversation or daily affairs. In music, it represents a short, light instrumental composition, usually for the piano, characterized by a graceful and dynamic character without rigid structural constraints.