What is the phonetic spelling for omasum?

Here's a breakdown:

* ˈoʊ: The "o" sound in "go"

* .mə: The "uh" sound in "but" followed by the "m" sound

* .səm: The "s" sound followed by the "uh" sound in "but" followed by the "m" sound

So, it sounds like "OH-muh-sum".