The spelling of the word "RCURVE" can be confusing as it does not follow traditional English spelling patterns. In IPA phonetic transcription, the word is pronounced as /ɑ:r kərv/. The "R" sound is pronounced with a strong emphasis, followed by the "C" sound as in "curve". The "U" sound is pronounced as a short "uh" sound. Together, these sounds make up the distinct pronunciation of "RCURVE", a word commonly used in mathematics and science to describe the shape of a curve.