#particles

• That is to say — A regional or archaic phonetic variant of the adverb 'adică'; used in informal speech or archaic literary texts to introduce an explanation, a clarification, a structural conclusion, or to express a rhetorical surprise within a popular dialogue.
• Aerobiology — An interdisciplinary branch of biology that deals with the study of living organisms and particles of biological origin (such as bacteria, fungi, pollen, spores, cysts, and viruses) passively transported through the air, as well as with the analysis of their movement, survival, and impact on the environment and human health.
• Aerosol — A heterogeneous macromolecular disperse system formed by a collection of fine particles, solid or liquid, stably suspended within a gaseous medium (such as atmospheric air). In a medical or industrial sense, the term designates either natural phenomena like fog and smoke, or pharmaceutical preparations sprayed under pressure for therapeutic inhalation directly into the airways.
• Antiparticle — An elementary particle that has exactly the same mass, lifetime, and spin as a corresponding particle of ordinary matter, but whose electric charges, quantum numbers, and magnetic moments have opposite mathematical signs. Upon direct contact between a particle and an antiparticle, the structural phenomenon of mutual annihilation occurs, converting their entire mass into energy in the form of high-frequency photons.
• Likewise — Likewise, also, similarly, equally; in the same manner or to the same extent as the previously mentioned element. Intensively used in ecclesiastical texts, chronicles, old legal documents, or archaic literary works to establish a structural relationship of equivalence, addition, or logical continuity between facts or concepts.
• Atomist — A follower of atomism; a philosopher or scientist who explains the structure of matter or the universe through the existence of atoms or discrete elementary particles. As an adjective, the term describes everything related to the doctrine of atomism, its supporting scholars, or analytical methods based on breaking down a whole into minimal constituent units.