Pronunciation: [ɹˈɒm] (IPA) 
The word "rhomb" is spelled with an "h" because it derives from the Greek word "rhombos," which was pronounced with a sound equivalent to the English "h." In IPA phonetic transcription, the word rhomb is spelled /rɒm/. The "o" is pronounced with a short "oh" sound, and the "m" at the end is not pronounced with an extra syllable. The spelling of "rhomb" may seem unusual, but it accurately reflects the word's origins and pronunciation.
A rhomb refers to a geometric shape that is classified as a parallelogram with four equal sides. It is similar to a square in that all four sides have the same length, but unlike a square, the angles of a rhomb are not right angles. Instead, the angles of a rhomb can vary, but pairs of opposite angles are always congruent. In other words, if one angle of a rhomb is measured, the opposite angle will have the same measure. This property makes the rhomb a quadrilateral with opposite sides that are parallel and congruent.
The term "rhomb" is derived from the Greek word "rhomboos," meaning a spinning top, due to its resemblance to the shape of a top. Rhombs can be found in various fields, such as math, engineering, and design, where their equal sides and unique angles make them useful in different applications.
In mathematics, rhombs are often used in geometry to illustrate properties and concepts related to quadrilaterals and polygons. They are distinct from other quadrilateral shapes, such as squares, rectangles, and parallelograms, due to their specific combination of equal sides and opposite angles. As a result, the rhomb serves as a fundamental element in the study of planar shapes and is a key component in the creation of various structures and designs across different disciplines.
A four-sided figure whose sides are equal, but whose angles are not right angles.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "rhomb" is derived from the Greek word "rhombos", which means "spinning top" or "something that spins". It is also associated with the Greek word "rhembesthai", meaning "to spin or whirl around". This connection likely comes from the shape of a rhombus, which resembles a spinning top when rotated on its diagonal axis. The term "rhombus" was later adopted into Latin and eventually English to refer to a quadrilateral with four equal sides but no right angles.
