ex·clu·sion /ik-'sklü-zhən/ n
1: the act of excluding or state of being excluded; specif: refusal of entry into the U.S. by immigration officials
review of deportation and exclusion orders compare deportation
2: something that excludes or is excluded: as
a: a part of an insurance contract that excludes specified risks from coverage compare condition, declaration
b: an amount that is excluded from tax liability
a $10,000 annual per donee exclusion for gifts — W. M. McGovern, Jr. et al. compare credit, deduction, exemption
ex·clu·sion·ary /-zhə-ˌner-ē/ adj
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.