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WordReference Random House Learner's Dictionary of American English © 2024di•chot•o•my /daɪˈkɑtəmi/USA pronunciation n. [countable], pl. -mies. - division into two parts, esp. into two parts that are opposed:a dichotomy between thought and action.
See -tom-. WordReference Random House Unabridged Dictionary of American English © 2024di•chot•o•my (dī kot′ə mē),USA pronunciation n., pl. -mies. - division into two parts, kinds, etc.; subdivision into halves or pairs.
- division into two mutually exclusive, opposed, or contradictory groups:a dichotomy between thought and action.
- Botanya mode of branching by constant forking, as in some stems, in veins of leaves, etc.
- [Astron.]the phase of the moon or of an inferior planet when half of its disk is visible.
- Greek dichotomía. See dicho-, -tomy
- 1600–10
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