corona radiata

noun

co·​ro·​na ra·​di·​a·​ta kə-ˈrō-nə-ˌrā-dē-ˈā-tə 

-ˈä-tə

plural coronae radiatae kə-ˈrō-(ˌ)nē-ˌrā-dē-ˈā-(ˌ)tē 

-ˈä-(ˌ)tē

1

: the zone of small follicular cells immediately surrounding the ovum in the graafian follicle and accompanying the ovum on its discharge from the follicle

2

: a fan-shaped mass of white matter fibers passing to and from the cerebral cortex

Word History

Etymology

borrowed from New Latin corōna radiāta "radiant crown" (crown encircled by points representing solar rays)

First Known Use

1869, in the meaning defined at sense 2

Medical Definition

corona radiata

noun

co·​ro·​na ra·​di·​a·​ta kə-ˈrō-nə-ˌrād-ē-ˈāt-ə, -ˈät- 

plural coronae radiatae -(ˌ)nē-ˌrād-ē-ˈāt-(ˌ)ē, -ˈät- 

1

: the zone of small follicular cells immediately surrounding the ovum in the graafian follicle and accompanying the ovum on its discharge from the follicle

2

: a large mass of myelinated nerve fibers radiating from the internal capsule to the cerebral cortex