Merriam-Webster's Collegiate Dictionary:
mephistophelean
mephistopheles
mephistophelian
mephitic
mephitis
meprobamate
mer
mer?n
merano
merbromin
merc
mercalli scale
mercantile
mercantilism
mercantilist
mercantilistic
mercaptan
mercaptopurine
mercator
mercator projection
merced
mercenarily
mercenariness
mercenary
mercer
mercerise
mercerization
mercerize
mercery
merch
merchandise
merchandiser
merchandising
merchandize
merchandizing
merchant
merchant bank
merchant banker
merchant banking
merchant marine
merchant mariner
merchant ship
merchantability
merchantable
merchantman
mercia
mercian
mercier
merciful
mercifully
mercifulness
merciless
mercilessly
mercilessness
mercurial
mercurially
mercurialness
mercuric
mercuric chloride
mercurochrome
mercurous
mercurous chloride
mercury
mercury chloride
mercury lamp
mercury-vapor lamp
mercy
mercy killing
merde
mere
meredith
merely
merengue
meretricious
meretriciously
meretriciousness
merganser
merge
mergence
mergenthaler
mergentheim
merger
meri?
meriden
meridian
meridional
meridionally
meringue
merino
merioneth
merionethshire
meristem
meristematic
meristematically
meristic
meristically
merit
