Definition List Display Issue in IE

Test Page (view in Internet Explorer)

I am having an issue with the way IE is displaying my definition lists. I am floating the defnition term to the left, therefore the definition description is to the right of it. In the link above, you’ll notice the first two words “definition” on the right-hand side are indented by a couple pixels. The last two are not because they are below the definition terms. What is causing this to happen? Is there a fix for this or is there another way to approach this issue? Firefox and Safari are fine, the issue is with IE.