[ hek-sag-uh-nl ]
See synonyms for hexagonal on Thesaurus.com
  1. of, relating to, or having the form of a hexagon.

  2. having a hexagon as a base or cross section: a hexagonal prism.

  1. divided into hexagons, as a surface.

  2. Crystallography. noting or pertaining to a system of crystallization in which three equal axes intersect at angles of 60° on one plane, and the fourth axis, of a different length, intersects them perpendicularly.

Origin of hexagonal

First recorded in 1565–75; hexagon + -al1

Other words from hexagonal

  • hex·ag·o·nal·ly, adverb
  • pseu·do·hex·ag·o·nal, adjective
  • pseu·do·hex·ag·o·nal·ly, adverb
  • sub·hex·ag·o·nal, adjective

Words Nearby hexagonal

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use hexagonal in a sentence

British Dictionary definitions for hexagonal


/ (hɛkˈsæɡənəl) /

  1. having six sides and six angles

  2. of or relating to a hexagon

  1. crystallog relating or belonging to the crystal system characterized by three equal coplanar axes inclined at 60° to each other and a fourth longer or shorter axis at right angles to their plane: See also trigonal

Derived forms of hexagonal

  • hexagonally, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for hexagonal


[ hĕk-săgə-nəl ]

  1. Having six sides.

  2. Relating to a crystal having three axes of equal length intersecting at angles of 60° in one plane, and a fourth axis of a different length that is perpendicular to this plane. The mineral calcite has hexagonal crystals. See illustration at crystal.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.