The definition of affiant is a legal term used to identify someone who makes a sworn statement called an affidavit.
(noun)An example of an affiant is a person who gives testimony to the police and then swears to it and usually signs it.
See affiant in Webster's New World College Dictionary
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noun
Origin: < prp. of OFr afier: see affiance
See affiant in American Heritage Dictionary 4
noun
Origin:
Origin: From affy, to make affidavit
Origin: , from Middle English affien, to trust
Origin: , from Old French affier, to promise; see affiance
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