redescending
/ˌriːdɪˈsɛndɪŋ/adjective
1That descends again.
2 Statistics. Of a function or curve: having two domains over which it decreases, separated by a domain near the origin over which it increases.
- Used with reference to a particular category of estimators..
Origin
Late 19th century; earliest use found in Robert Louis Stevenson (1850–1894), writer. From redescend + -ing.