Intercorrelation

[kawr-uh-ley-shuh n, kor-] /ˌkɔr əˈleɪ ʃən, ˌkɒr-/

noun
1.
mutual relation of two or more things, parts, etc.:
Studies find a positive correlation between severity of illness and nutritional status of the patients.
Synonyms: similarity, correspondence, matching; parallelism, equivalence; interdependence, interrelationship, interconnection.
2.
the act of or state of being .
3.
Statistics. the degree to which two or more attributes or measurements on the same group of elements show a tendency to vary together.
4.
Physiology. the interdependence or reciprocal relations of organs or functions.
5.
Geology. the demonstrable equivalence, in age or lithology, of two or more stratigraphic units, as formations or members of such.
/ˌkɒrɪˈleɪʃən/
noun
1.
a mutual or reciprocal relationship between two or more things
2.
the act or process of correlating or the state of being correlated
3.
(statistics) the extent of correspondence between the ordering of two variables. Correlation is positive or direct when two variables move in the same direction and negative or inverse when they move in opposite directions
noun

mutual relationship; connection between two or more things
n.

1560s, from Middle French corrélation, from cor- “together” (see com-) + relation (see relation).