WordReference Random House Unabridged Dictionary of American English © 2026
hex•ag•o•nal
(hek sag′ə nl),USA pronunciation adj.
hex•ag′o•nal•ly, adv.
WordReference Random House Learner's Dictionary of American English © 2026- Mathematicsof, pertaining to, or having the form of a hexagon.
- Mathematicshaving a hexagon as a base or cross section:a hexagonal prism.
- Mathematicsdivided into hexagons, as a surface.
- Crystallographynoting 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.
- hexagon + -al1 1565–75
hex•a•gon /ˈhɛksəˌgɑn, -gən/USA pronunciation
n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2026- Mathematicsa figure having six angles and six sides.
hex•a•gon
(hek′sə gon′, -gən),USA pronunciation n.
- Mathematicsa polygon having six angles and six sides.
- Greek hexágōnon. See hexa-, -gon
- 1560–70
'hexagonal' also found in these entries (note: many are not synonyms or translations):
apatite
- benzene ring
- beryl
- box spanner
- buckminsterfullerene
- calcite
- chicken wire
- cinnabar
- concertina
- corundum
- crystal system
- dolomite
- Giant's Causeway
- graphite
- hematite
- honeycomb
- molybdenite
- niccolite
- nut
- quartz
- rhodochrosite
- siderite
- tourmaline
- zincite
- Alençon lace
- Allen screw
- Allen wrench
- benitoite
- bobbinet
- boron nitride
- columnar jointing
- eucryptite
- favus
- geodesic dome
- hex
- Kekulé's formula
- lag screw
- machine bolt
- snow
- star cut