The word parallelopiped is spelled with three "l"s and three "p"s, which can make it tricky to remember. Its correct phonetic transcription is /ˌpærəˈlɛləpaɪpɛd/. The first syllable, "par," comes from the Greek word for "beside" or "alongside." The second syllable, "ell," represents the "l" sound, and the third syllable, "o," represents the "ə" or "uh" sound. The final syllable, "pi-ped," is a combination of the "p," "i," and "ped" sounds, resulting in a unique and complex spelling.
A parallelepiped is a three-dimensional geometric shape formed by six parallelograms as its faces. It is also known as a parallelogram-shaped prism or cuboid. The term "parallelepiped" is derived from the Greek words "para," meaning "beside" or "parallel," and "lepis," meaning "side."
This solid figure has six faces, all of which are parallelograms. Each face is formed by two pairs of parallel sides. Additionally, all opposing faces of the parallelepiped are congruent in both shape and size. The parallel edges of the parallelepiped are equal, while the lateral edges are perpendicular to each other. It has eight vertices or corners and twelve edges.
The volume of a parallelepiped can be calculated by multiplying the length by the width and the height of the shape. The surface area can be determined by summing the areas of each of the six faces.
Parallelepipeds are commonly encountered in mathematics, engineering, and architecture. They serve as a fundamental building block for understanding more complex three-dimensional shapes. For example, rectangular prisms and cubes are special types of parallelepipeds, where all faces are right angles or squares, respectively. The parallel sides and right angles in parallelepipeds make them highly stable and suitable for applications such as packaging, construction, and engineering design.
An oblong solid figure of six sides, having its opposite sides equal and parallel.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "parallelopiped" is derived from the Greek roots "para" meaning "beside" or "parallel" and "lēloun" meaning "to press close or shut". It was originally used in geometry to refer to a three-dimensional shape with six rectangular faces, where each pair of opposite faces is parallel. The word itself dates back to the early 17th century, with its usage primarily in mathematical and scientific contexts.