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|Look up trichotomy in Wiktionary, the free dictionary.|
A trichotomy is a splitting into three parts, and, apart from its normal literal meaning, can refer to:
- trichotomy (mathematics), in the mathematical field of order theory
- trichotomy (philosophy), for the theological idea that man has a threefold nature; also for a three-way classificatory division, especially when done according to a pattern
- In taxonomy, a trichotomy is speciation of three groups from a common ancestor, where it is unclear or unknown in what chronological order the three groups split.
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