In total, how many words are possible to make using these particular combinations of letters?On this list of words starting with 'u' that contain 'osa', there are 25 fantastic combinations that are possible.
How many letters does the longest word on this list consist of?The biggest word is 20 characters, which is 'ureterosalpingostomy'.
What word that starts with 'u' and includes 'osa' is the most unusual?We feel that 'urosacral' to be the most interesting word on this list. It is defined as "Of or pertaining to both the caudal and sacral parts of the vertebral column; as, the urosacral vertebræ of birds.".