It's a combination of vowels articulated without pause, as in "mouse"
... After a pause, one half of the children cried in chorus, "Yes, sirl" 
Upon which the .... and sentences consist of combinations of speech sounds 
which articulations... [DOC] [TLE] The Building Blocks of Literacy - Teaching As Leadership [PAR] the phonetics (the oral articulation) of our phonemes (speech sounds) and the .... 
26 /zh/ is the only consonant phoneme that does not have its own grapheme, 
though