■ noun
1》 a group of similar things or people positioned or occurring closely together.
↘a natural subgroup of a population, used for statistical sampling or analysis.
2》 Chemistry a group of atoms of the same element, typically a metal, bonded closely together in a molecule.
■ verb form a ~.
↘ Statistics (of data points) have similar numerical values.
Derivatives
~ed adjective
Origin
OE clyster ; prob. related to clot .