def descriptionLists(orderedDictionary={}, sideBySide=False):
    """
    *A list of definitions.*

    **Key Arguments:**
        - ``orderedDictionary`` -- the ordered dictionary of the terms and their definitions
        - ``sideBySide`` -- Make terms and descriptions in <dl> line up side-by-side.

    **Return:**
        - ``descriptionLists``
    """
    termList = ''
    for k, v in orderedDictionary.iteritems():
        termList = (
            """%(termList)s
            <dt>%(k)s</dt>
            <dd>%(v)s</dd>
        """
             % locals())
    if sideBySide:
        sideBySide = 'dl-horizontal'
    else:
        sideBySide = ''
    descriptionLists = (
        """
        <dl class="%(sideBySide)s">
            %(termList)s
        </dl>
    """
         % locals())
    return descriptionLists
