pallium

• اسم له عدة معانٍ: قد يشير إلى القشرة المخية (المادة الرمادية)، أو الطبقة الظهارية الواقية لدى الرخويات التي تفرز الصدفة، أو الرداء الليتورجي الذي يلبسه البابا والأساقفة، أو العباءة التي كان تُلبس في روما القديمة.

A noun with multiple meanings: it can refer to the cerebral cortex (the grey matter of the brain), a protective epidermal layer in mollusks that secretes the shell, a liturgical vestment worn by the Pope and archbishops, or a cloak worn in ancient Rome.

1. Cerebral cortexC2formalscientific

   The layer of unmyelinated neurons, also known as grey matter, that forms the outer surface of the cerebrum.

   قشرة المخ

   • The pallium is crucial for higher cognitive functions.
   • Damage to the pallium can affect memory and consciousness.
   • Neuroscientists study the pallium to understand brain evolution.

   المرادفاتcerebral cortexcortex

2. Mantle in mollusksC2formalscientific

   A protective layer of epidermis in mollusks or brachiopods that secretes a substance forming the shell.

   العباءة في الرخويات

   • The mollusk's pallium secretes calcium carbonate to build its shell.
   • In brachiopods, the pallium is responsible for shell formation.
   • The pallium of a clam is visible when the shell is opened.

   المرادفاتmantle

3. Ecclesiastical vestmentC2formal

   A vestment in the Roman Catholic Church consisting of a band encircling the shoulders with two lappets hanging in front and back.

   الباليوم

   • The archbishop wore a pallium during the ceremony.
   • The pallium is a symbol of papal authority.
   • Only the Pope can grant the right to wear a pallium.

4. Ancient Roman cloakC2formal

   A cloak or mantle worn by men in ancient Rome, often as a sign of status.

   الباليوم

   • Roman senators wore a pallium over their tunics.
   • The pallium was a common garment in ancient Rome.
   • He draped a purple pallium over his shoulders.

   المرادفاتcloakmantlepall