chalone

noun

cha·​lone ˈkā-ˌlōn  ˈka- 

: a substance (such as a glycoprotein) that inhibits mitosis only in the specific tissue that secretes it compare hormone

Word History

Etymology

Greek chalōn, present participle of chalan to slacken

First Known Use

1914, in the meaning defined above

Medical Definition

chalone

noun

cha·​lone ˈkā-ˌlōn  ˈkal-ˌōn 

: a substance (as a glycoprotein) that inhibits mitosis in the specific tissue which secretes it