Mid 19th century; earliest use found in Alexander Ellis (1814–1890), phonetician and mathematician. From post-classical Latin phoneticusphonetic + -al.
Definition of phonetical in US English:
phonetical
adjectivefəˈnɛtɪkl
Phonetic.
Origin
Mid 19th century; earliest use found in Alexander Ellis (1814–1890), phonetician and mathematician. From post-classical Latin phoneticus phonetic + -al.