Mercury...?
Mosquito.
i don't really know but the word starts with an a and the 5th,6th,and7th letters are m,a,t.
Merry is a synonym for happy. It begins with the letter m.
Science isn't an acronym, it means the letter c. The word science is spelled with a two Cs.
'Moist'.
atom
yield
Modernize is a word that starts with m and means to upgrade.
Make is a word that means to create and starts with "m".
my
A four letter word that starts with J and ends with M: jism.
-Mad-Me
methionylglutaminylarginyltyrosylglutamylseryllleucylpheny
A seven (7) letter word that starts with M and ends with O: memento
A muscle is a 7 letter word that starts with m and helps you run fast.
One very long word that starts with m is: microcryptocrystalline (22 letters)
minimum