The combining form that means skin is "derm/o" or "dermat/o." These prefixes are derived from the Greek word "derma," which means skin. They are commonly used in medical terminology, such as in "dermatology," the study of skin and its diseases.
Combining form derm/o means: skin
-derma means skin.
-oid is the medical terminology combining form meaning resembling. For example, dermoid means resembling skin, and deltoid means resembling a triangle.
The combining form hist/o means
Xeno- is the combining form meaning strange or other.
Derm- the combining form. Dermatology is the study of the skin. Dermatitis is an inflammation of the skin.
The combining form that means "nail" is onych/o.
A hump is not a medical term, so I can't give you the correct combining form.
Combining form for shape
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.