An Etymological Dictionary of Astronomy and Astrophysics

1. To give audible expression to; speak or pronounce.
   

2. Phonetics: To produce (speech sounds, speech-like sounds, syllables, words, etc.) audibly, with or without reference to formal language (Dictionary).

Etymology (EN): M.E. outren from M.Du. uteren or M.L.G. utern “to turn out, show, speak,” from uter “outer,” comparative adj. from ut, → out.

Etymology (PE): Vâpidan, from Proto-Ir. *uab-/*uaf- “to utter (sing, speak), to call;” cf. Av. uf- “to sing;” Sogd. w’β, w’b “to say, speak;” Baluci gwâpt/gwâp- “to summon, call together;” Mod.Pers. gap, gab “word, chit-chat,” zand-bâf “nightingale,” buf “owl.”