mid·list 
(mĭdlĭst′)
(mĭdlĭst′)n.
The portion of a publisher's list of new or current titles made up of books expected to have less popular appeal than the frontlist.
- biological oxygen demand
- biological response modifier
- biological warfare
- biological weapon
- biologist
- biology
- bioluminescence
- bioluminescent
- biolysis
- biolytic
- biomagnetism
- biomagnification
- biomarker
- biomass
- biomaterial
- biomathematical
- biomathematician
- biomathematics
- biome
- biomechanical
- biomechanically
- biomechanics
- biomedical
- biomedical engineering
- biomedicine