lesser     
 Adj [menor] lesser

~ N ~ amount, (to)~ degree, (to)~ extent
  Lesser amounts of compounds were required.| Cells were also involved, but to a much lesser extent.
  > Suele aparecer como parte de un Sintagma Preposicional precedido de la preposición "to".

Adv ~ far ~, much ~ | significantly ~, slightly, ~ substantially ~
  These reactions may occur to a far lesser extent in other tissues. | Similar results, to a slightly lesser degree, may apply to heart function.
  > Suele aparecer como parte de un Sintagma Preposicional precedido de la preposición "to".

little (less)