covariation
noun
co·vari·a·tion ˌkō-ˌver-ē-ˈā-shən 
: correlated variation of two or more variables
Word History
First Known Use
1906, in the meaning defined above
- depressive
- depressively
- depressivenesses
- depressives
- depressor
- depressors
- depressure
- depressurisation
- depressurisations
- depressurise
- depressurised
- depressurises
- depressurising
- depressurization
- depressurizations
- depressurize
- depressurized
- depressurizes
- depressurizing
- depreter
- deprivable
- deprival
- deprivals
- deprivation
- deprivations