The spelling of "most rightangled" is pronounced as /moʊst raɪtˈæŋgəld/. The word "rightangled" is an adjective used when an angle measures exactly 90 degrees, forming a right angle. Adding the word "most" before it indicates a superlative degree, meaning the angle in question is the most right-angled among others. The spelling of "rightangled" follows the standard rules of English, with the silent "h" in "right" and the use of "-ed" to form the past participle.
The term "most right-angled" does not have a specific etymology since it is a phrase derived from the combination of the words "most" and "right-angled" rather than being a single word. However, we can analyze the origins of each component:
1. "Most": This word comes from Middle English "moste" which evolved from the Old English "mǣst". In turn, "mǣst" originated from the Proto-Germanic "maistaz". The ultimate root can be traced back to the Proto-Indo-European root "*mey-", meaning "big" or "great". Over time, "most" has taken on various meanings, including "greatest in amount or degree" or "superlative form of much or many".
2. "Right-angled": This term refers to an angle that measures precisely 90 degrees, forming a perfect L-shape.