Terms to describe head & neural tube defect

acrocephaly = oxycephalic = trricephaly = this term maybe applied to tower headed condition (the top of the head is pointed)

anencephaly = absent of skull and cerebral cortex

arhinencephaly = congenital absence of the rhinencephalon

arthrogryposis = this term implies contracture of a joint

brachycephaly = the head is too short

cranial hyperostosis = bone overgrowth

cephalocele = protrusion of intracranial contents

craniostenosis = craniosynostosis = premature closure of skull sutures

dolicephaly = the head is too long

dystopia canthorum = intercanthal distance is increased, but not the interpupillary or (bony) interorbital distances

encephalocele = part of the brain protrudes from the skull

hydrocephalus = water on the brain

haloprosencephaly = hypotelorism with cleft palate

lissencephalic = bat-like brain with no convulutions (ahyria)

micrognathia = the mandible is too small

metopic suture = this is the same with frontal suture

macrocephaly = the head is abnormally large (includes the scalp, the cranial bone, and the contents of the cranium)

megalencephaly = enlarged brain

microcephaly = head is abnormalaly small

meningocele = dura and arachnoid mater bulge through the defect

myelocele = segments of the cord are exposed with no covering

myelomeningocele = the cord’s central canal is exposed

neurocraium = the part of the skull holding the brain

obelion = the point of the saggital suture crossed by a line joining the parietal foramina

plagiocephaly =an asymmetrical, twisted head (e.g.: irregular closure of the cranial sutures)

rachischisis = congenital fissure of the spinal column

sinciput = the anterior, upper part of the head

spina bifida = incomplete vertebral arch

spina bifida occulta = the defect is covered by skin and fascia

viscerocranium = facial skeleton

wormian bones = supernumerary bonesin the sutures of the skull

 

Source: 
2. Oxford Handbook of Clinical Specialties. 5th edition. 2001.