Webster's 1913 Dictionary\Cat`e*na"tion\, n. [L. catenatio.]
Connection of links or union of parts, as in a chain; a
regular or connected series. See {Concatenation}. --Sir T.
Browne.
Biology Dictionary- The spontaneous linking of certain chemical elements to each other, such as carbon to make rings or chains.
- The linking of multiple copies of a macromolecule to each other.