1

parietal

adjective pa·ri·e·tal \ pə-ˈrī-ə-tᵊl \

Definition of parietal

1 a :of or relating to the walls of a part or cavity
b :of, relating to, or located near or within the parietal bone or parietal lobe of the head
2 :attached to the main wall rather than the axis or a cross wall of a plant ovary used of an ovule or a placenta
3 dated :of or relating to college living or its regulation; especially :of or relating to parietals (see 2parietal 2)
  • All of this takes place in a residential environment no longer constrained by the parietal hours that the older set of today's parents will recall. One of the signature changes in the student revolt of the late sixties/early seventies was the end not only of curfew hours for residence halls but also of housing separated by sex.
  • —Barrett Seaman

parietal was our Word of the Day on 12/13/2012. Hear the podcast!

Recent Examples of parietal from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'parietal.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Did You Know?

Fifteenth-century scientists first used "parietal" (from Latin paries, meaning "wall of a cavity or hollow organ") to describe a pair of bones of the roof of the skull between the frontal and posterior bone. Later, "parietal" was also applied to structures connected to or found in the same general area as these bones; the parietal lobe, for example, is the middle division of each hemisphere of the brain. In the 19th century, botanists adopted "parietal" as a word for ovules and placentas attached to the walls of plant ovaries. It was also in the 19th century that "parietal" began to be heard on college campuses, outside of the classroom; in 1837, Harvard College established the Parietal Committee to be in charge of "all offences against good order and decorum within the walls."

Origin and Etymology of parietal

Middle English, from Medieval Latin parietalis, from pariet-, paries wall of a cavity or hollow organ, from Latin, wall


2

parietal

noun

Definition of parietal

1 :a parietal part (such as a bone, scale, or plate)
2 parietals plural, dated :the regulations governing the visiting privileges of members of the opposite sex in campus dormitories

First Known Use of parietal

15th century


Medical Dictionary

1

parietal

adjective pa·ri·etal \ pə-ˈrī-ət-ᵊl \

medical Definition of parietal

1 :of or relating to the walls of a part or cavity — compare visceral
2 :of, relating to, or located in the upper posterior part of the head; specifically :relating to the parietal bones

2

parietal

noun

medical Definition of parietal

:a parietal part (as a bone)

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