octagon
noun [C] /ˈɒk.tə.ɡən/
/ˈɑːk.tə.ɡɑːn/ Definition
› a flat shape with eight sidesGeometrical shapesSpherical, circular and annular objects octagonal /ɒkˈtæɡ.ən.əl/
/ɑːk-/ adjective › an octagonal (= with eight sides) towerGeometrical shapesSpherical, circular and annular objects
/ɑːk-/ adjective › an octagonal (= with eight sides) towerGeometrical shapesSpherical, circular and annular objects(Definition of octagon noun from the Cambridge Advanced Learner's Dictionary & Thesaurus
© Cambridge University Press)
Browse related topics
You are looking at an entry to do with Geometrical shapes, but you might be interested in these topics from the Mathematics & arithmetic topic area:
- Addition, subtraction, multiplication & division
- Averages
- Branches & types of mathematics
- Calculations & calculating
- Fractions
- Geometrical & mathematical instruments
- Geometry: bends, loops & curves
- Geometry: describing angles, lines & orientations
- Geometry: parts of geometrical shapes
- Geometry: properties of circles & curves
- Mathematical symbols
- Numbering & counting
- Numbers generally
- Numbers: cardinal, including nought & zero
- Numbers: groups of things according to number
- Numbers: ordinal
- Numbers: single, double & multiple
- Numerical relationships
- Statistics
- Tables, graphs & diagrams
- Terms for numbers
Browse the Dictionary
Browse the Thesaurus
SMART Thesaurus
Synonyms and related words:
- -cornered suffix
- -dimensional suffix
- arch noun
- asymmetric adjective
- circular adjective
- cylinder noun (SHAPE)
- cylindrical adjective
- fractal noun
- heptagon noun
- Möbius strip/band noun
- one-dimensional adjective (MEASURE)
- polyhedron noun
- pyramidal adjective
- rhombus noun
- scalene triangle noun
- semicircle noun
- spherical adjective
- trapezoid noun
- triangle noun
- triangular adjective
Topic:
Geometrical shapes
Word of the Day
Blog
Read our blog about how the English language behaves.
New Words
Find words and meanings that have just started to be used in English, and let us know what you think of them.
