The medical terminology combining form for "rapid" is "tachy-." For instance, tachycardia is abnormally rapid heartrate.
The combining form hist/o means
The prefix for rapid or fast is tachy-(as in tachycardia meaning rapid heartbeat).Tachy- is the medical terminology prefix meaning fast, as in tachyphylaxis or tachycardia.
Xeno- is the combining form meaning strange or other.
Combining form derm/o means: skin
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 combining word is sphygum
-pnea means breathing, so tachynpea is rapid breathing, apnea is no breathing, and eupnea is normal breathing.It means breathing, or pertaining to breathing.
Nitrogen- is the combining form for nitrogen. For instance, nitrogenous means containing or related to nitrogen.