noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The division of one into five separate but related parts. countable, uncountable

Etymology

From penta- + -chotomy, after dichotomy, or from Ancient Greek πένταχα (péntakha, “in five divisions”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.