invagination

noun

in·​vag·​i·​na·​tion in-ˌva-jə-ˈnā-shən 

1

: an act or process of invaginating

specifically : the formation of a gastrula by an infolding of part of the wall of the blastula

2

: an invaginated part

Examples of invagination in a Sentence

Recent Examples on the Web

In 2010, Seely, who was a member or the Arizona State University triathlon team when she was diagnosed with Chiari II Malformation, basilar invagination, and Ehlers-Danlos Syndrome, which affect her brain, spine, and connective tissues. —Madison Thacker, The Arizona Republic, 2 Oct. 2021

Word History

First Known Use

circa 1658, in the meaning defined at sense 1

Medical Definition

invagination

noun

in·​vag·​i·​na·​tion -ˌvaj-ə-ˈnā-shən 

1

: an act or process of invaginating: as

a

: the formation of a gastrula by an infolding of part of the wall of the blastula

b

: intestinal intussusception

2

: an invaginated part