The alveolonasal line refers to the imaginary line dividing the oral and nasal cavities during speech. This line plays a crucial role in determining the sounds we produce. Synonyms for the alveolonasal line include the oral-nasal boundary or the oral-nasal divide. It represents the point at which airflow transitions from passing through the oral cavity to entering the nasal cavity. Understanding the position and movement of this line is crucial in phonetics and linguistics to study articulation and nasalization in speech production. The alveolonasal line, or its alternative terms, helps researchers analyze and describe the intricate mechanisms involved in speech articulation and the production of nasal sounds.