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1. Relating to or forming the wall of a body part, organ, or cavity.
2. Of or relating to either of the parietal bones.
3. Botany Borne on the inside of the ovary wall. Used of the ovules or placentas in flowering plants.
4. Dwelling within or having authority within the walls or buildings of a college.
1. A parietal part, such as a wall or bone.
2. parietals The rules governing the visiting privileges of members of the opposite sex in college or university dormitories.

[Middle English, from Late Latin parietālis, of a wall, from Latin pariēs, pariet-, wall.]


pl n
(Education) informal US the regulations that govern living within a college
References in classic literature ?
Would you have any objection to my running my finger along your parietal fissure?
In the surgeon's deposition it was stated that the posterior third of the left parietal bone and the left half of the occipital bone had been shattered by a heavy blow from a blunt weapon.
PUPC 71/57 is part of the original skull, basically the opisthocranium, which makes it an incomplete specimen retaining only the following: occipital region, occipital condyles, paraoccipital process, part of the parietals, the auditory bullae and the basisphenoid (Fig.
The main characters defining the new fossil skull are: the wide posterior tuberosities of the basioccipital, the large bullae, and the absence of horn cores (according to the plesiomorphic shallow temporal fossae, weak temporal lines, parietals in the dorsal plane).
Still in this stage, the supraoccipital dorsally approaches the caudal edge of the parietals (Figure 3).
The two parts of the parietals proceed in the medial direction to posterior fusion, approaching the quadratojugal laterally and the supraoccipital caudally.
A pathognomonic periosteal reaction at the occipital and parietals, along the lambdoid suture, pointed to the compression of the skull that could explain the trauma, ischemic necrosis and subsequent infection.
In the present case the distribution of the porous area in parietals and occipital, the occipital reaction parallel to lambda, the superimposition of the new bone to the outer table, the absence of woven bone at the inner side of the vault and the fibrous appearance of the new bone indicates that ossification followed the normal pattern of growth (Aufderheide and Rodriguez-Martin 1998; Ortner and Putschar 1997).
Among the males (n=3), one has fractures of the frontal and right parietal; another of the maxilla and left parietal, and the third, on both parietals.