tes·ta·ment 
(tĕstə-mənt)
(tĕstə-mənt)n.
1. Something that serves as tangible proof or evidence: The spacious plan of the city is a testament to the foresight of its founders.
2. A statement of belief; a credo: my political testament.
3. Law A usually formal, written directive providing for the disposition of one's property after death; a will.
4. Testament Bible Either of the two main divisions of the Bible.
5. Archaic A covenant between humans and God.
[Middle English, a will, from Latin testāmentum, from testārī, to make a will, from testis, witness; see trei- in the Appendix of Indo-European roots.]
tes′ta·mentar·y (-mĕntə-rē, -mĕntrē) adj.