English Lexicon

Diagonal

/daɪˈæɡ.ən.əl/
nounadjectiveCEFR B2 (Upper)Top #1500 frequency
Full Thesaurus

Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    A straight line joining two non-adjacent vertices of a polygon.

    "In a square, there are two diagonals that intersect at the center."
As adjective
  1. 1

    Relating to or denoting a diagonal line or direction.

    "The artist used diagonal lines to create a sense of movement in the painting."

Thesaurus & Semantic Spectrum

Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

The term 'diagonal' originates from the Latin word 'diagonalis', which is derived from 'dia-' meaning 'through' and 'gonia' meaning 'angle'. It has evolved through Middle English from the Old French 'diagonal', reflecting its geometric significance in describing lines that connect non-adjacent vertices in polygons.

Quick Vocabulary Retention Check

Which of the following is the closest synonym for "Diagonal"?

Thesaurus & Synonyms Graph

Explore Nuanced Synonyms for "Diagonal"

Discover exact matches, context-specific alternatives, and antonyms with intensity ratings in the VocabDictionary Thesaurus.

View "Diagonal" Synonym Map