mu·ral 
(myrəl)
(myrəl)n.
A very large image, such as a painting or enlarged photograph, applied directly to a wall or ceiling.
adj.
1. Of, relating to, or resembling a wall.
2. Painted on or applied to a wall.
[Middle English, of a wall, from Old French, from Latin mūrālis, from mūrus, wall.]
mural·ist n.
- 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