H4Y4D2R1O1C3E1P3H4A1L1U1S1
27 points
HYDROCEPHALUS is validvalid
the condition of having an abnormal amount of cerebrospinal fluid in the cranial cavity [n HYDROCEPHALUSES]
an accumulation of serous fluid within the cranial cavity, also HYDROCEPHALY [n HYDROCEPHALI or HYDROCEPHALUSES]