dichotomy
- 01 C1 Advanced
a division or contrast between two things that are seen as opposites.
a division or contrast between two things that are represented as being opposed or entirely different.
Simple“There is a clear dichotomy between what the company says and what it actually does.”
In context“The essay explores the dichotomy between public duty and private desire in nineteenth-century literature.”
UsageOften used with the preposition 'between'.
SynonymsAntonyms - 02 C2 Proficiency
the division of a group into two parts that do not overlap.
the division of a class or genus into two disjoint subclasses that are together comprehensive.
Simple“The biologist studied the dichotomy of the species into two distinct groups.”
In context“In formal logic, a dichotomy requires that the two resulting categories be mutually exclusive and collectively exhaustive.”
UsageCommon in scientific and philosophical contexts.
Synonyms - 03 C2 Proficiency
the way a plant stem or a vein splits into two equal parts.
a mode of branching by constant repeated division into two equal parts.
Simple“The plant is identified by the dichotomy of its stems as they grow upward.”
In context“The fossil shows a clear pattern of dichotomy in the leaf veins, which helped researchers identify the ancient fern species.”
UsageUsed specifically in botany and anatomy to describe physical structures.
Synonymsbranchingforking - 04 C2 Proficiency
a time when the moon or a planet looks half-lit from Earth.
the phase of the moon or an inferior planet when half of its disk appears illuminated.
Simple“The moon reached dichotomy, appearing as a perfect half-circle in the night sky.”
In context“Precise observations of Venus at dichotomy were historically significant for calculating the distance between the Earth and the Sun.”
UsageRefers to the specific geometric alignment of celestial bodies.
Synonymshalf moonquadrature
“Vollmann has spent his career refusing to distill the world into dichotomies.”
“But it also risks creating a false dichotomy where all AI programs are seen as responsive and motivating, and all classroom teaching is rote lecturing.”
From Ancient Greek διχοτομία (dikhotomía, “dichotomy”).
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.