Question

please help I can't get these lost few words thank you
I need the prefix and suffix and the Combining form for each word if there is one thank you so much ahead of time for your help
Etymology
Mastectomy
Neuroma
Tachycardia
Endotracheal

Answer 1

If you just use an online dictionary, or most printed dictionaries, you will get the separate prefix and suffix meanings and origins as well as the word itself. Example:
http://www.merriam-webster.com/dictionary/mastectomy

Answer 2

Etym (word history)/ology (study of)

Mast (breast)/ectomy (removal)

Neur (nerve)/oma (tumor)

Tachy (rapid)/cardia (heart[rate])

Endo (inner)/ trachea (tubes leading to lungs)/-al (adjective suffix)

If you are going to be doing more of this, I would suggest getting a book on medical terminology. They are relatively inexpensive in paperback. Some of these can be found in an online or hardbound dictionary.

I hope this helps. Thanks for asking.