1) Of speech sounds 2) Pertaining to voice 
• (a.) Of or relating to the voice; as, phonal structure.
Relating to sound or to the voice. ... Origin: G. Phone, voice. ... (05 Mar 2000) ... 
(fo´nәl) pertaining to sound. vocal.
Pho'nal adjective [ Greek ... the voice.] Of or relating to the voice; as, phonal structure. Max Müller. 
Type: Term Pronunciation: fō′năl Definitions: 1. Relating to the voice or to sound.
phonal 1. Of, relating to, or producing speech sounds. 2. Designating those consonant-like and vowel-like segmental sounds articulated by an infant in the developmental stage prior to the utterance of identifiable words, after which they may be referred to as phonemes.