One of the mysteries of the English language finally explained.
A solid figure having three sides or faces (in addition to the base or ends).
- ‘From now on, we will move trihedrons to restore their positions and colors, without moving dihedras.’
- ‘A set of possible initial registrations is generated searching and aligning pairs of compatible trihedra from different views.’
- ‘Instead of vector components the orthonormal trihedrons of coordinate systems are subjected to transformations.’
- ‘However, these trihedra were much larger and were growth defects which arose from a mechanism other than the condensation of vacancies or the release of misfit strain.’
- ‘A hollowed trihedron replica is thus obtained having exactly the same shape as the model.’
- ‘A line making equal angles with the edges of a trihedron is called an isoclinal line of the trihedron.’
- ‘Besides chopping-tools, polyhedrons and some cleavers, trihedrons and bifaces form the most characteristic element within the tools.’
- ‘If this antenna is perfect, the axes of the two trihedrons would be respectively parallel to each other.’
Early 19th century: from tri- ‘three’ + -hedron, on the pattern of words such as polyhedron.
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