One of the mysteries of the English language finally explained.
A solid figure whose faces are trapeziums or trapezoids.
- ‘You must take the shining trapezohedron and keep it in a safe deposit box, until you are ready to come to Nigeria.’
- ‘The habit of beta quartz crystals is that of simple hexagonal dipyramids; other forms, including the right and left trapezohedra, are not often seen.’
- ‘First-generation crystals are rarely noted as minute orange-colored trapezohedra associated with the stratified layers of laumontite and stilbite, discussed below.’
- ‘The rhombic dodecahedron and the common trapezohedron are the most common forms.’
- ‘The analcime occurs as simple semitransparent trapezohedra to 3.5 cm across that contain cloudy white to brownish-red inclusions.’
Early 19th century: from trapezium + -hedron, on the pattern of words such as polyhedron.
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