Semantic of a nested list?

Hi,

In a page that I have only just started writing (only a paragraph or 2
there) I have produced an ordered list nested within a definition list:

http://people.aapt.net.au/~adjlstrong/bibliophile.html

Now I am happy that this use of lists demonstrates my meaning adequately,
surely an important consideration, but is it a semantically correct way
of conveying this meaning?

Quite frankly I think it would be unnecessarily cumbersome to nest
another <dd> and then style the element to produce numbers before each
item. I believe that what I have written is a compromise between good
syntax and good communication.

Any thoughts?

Thanks for any opinions and guidance,

Andrew
--
Urban Myths and the Iliad
http://people.aapt.net.au/~adjlstrong/homer.html
.