category_description() without and tags

hello,

i try to made new meta desciption tags for categories, and i get one problem.
whene i use “category_description()” or evry code of show category description:
is it show description and In the start and the end is show <p> and </p> tags.
It’s not really relevant for me, I would like to know how I can remove the <p> tags of my category description.

this is the code of i use:

<?php
  if (is_category())   { echo '<meta name="description" content="'.category_description().'"/>';}
   else { echo '<!-- no meta -->';} ?>