[1] : WordNet (r) 2.0

to a lesser extent
     adv : used to form the comparative of some adjectives and adverbs;
           "less interesting"; "less expensive"; "less quickly"
           syn: less ant: more
see also:
less more 

Extent >> E Words
Extent, definition of term: Extent
extent_pag1.html

Lesser >> L Words
Lesser, definition of term: Lesser
lesser_pag1.html

Lesser Bear >> L Words
Lesser Bear, definition of term: Lesser Bear
lesser+bear_pag1.html