John Cowan wrote:
> Garth Wallace scripsit:
>
>
>>I think where vowels are concerned, "labialized" is synonymous with
>>"rounded".
>
>
> Actually not. German rounded vowels are really labialized rather than
> rounded (the lips are open in the center but not at the corners);
> Swedish vowels are in fact rounded (the lips protrude).
>
> I think.
The book on phonetics I recently read distinguished between "exolabial"
and "endolabial" rounding/labialization: the former is when the lips are
rounded but the inside edge of the lips is not exposed, the latter is
when the lips curl back to expose the inside edge and make a sort of tunnel.