Combining form derm/o means: skin
The prefix derma- most often means skin... Like a dermatologist...derm means skinlike dermatology, Taxidermy, and Pachyderm
dermatitis inflammation of the skin derm is the root word and means skin derm/a root combining form is the letter derm/a/ itis suffix (itis) meaning inflammation
Derm- the combining form. Dermatology is the study of the skin. Dermatitis is an inflammation of the skin.
The combining form hist/o means
Xeno- is the combining form meaning strange or other.
The combining form that means "nail" is onych/o.
Combining form for shape
A hump is not a medical term, so I can't give you the correct combining form.
The prefix hepta- means seven.
The combining form that means hidden is "crypt-" as in "cryptic" or "cryptology."
The medical terminology combining form for "rapid" is "tachy-." For instance, tachycardia is abnormally rapid heartrate.
The combining word is sphygum