—n.
1 security pledged as a guarantee for repayment of a loan.
2 a person having the same descent as another but by a different line.
—adj.
1 descended from the same stock but by a different line.
2 side by side; parallel.
3 a additional but subordinate. b contributory. c connected but aside from the main subject, course, etc.
Derivatives:
collaterality n. collaterally adv.
Etymology: ME f. med.L collateralis (as COM-, LATERAL)
Useful english dictionary. 2012.