The word "reversings" is spelled with a double "s" at the end because it is the present participle form of the verb "reverse". In IPA phonetic transcription, "reversings" is pronounced /rɪˈvɜrsɪŋz/, with the stress on the second syllable. The "er" sound in "reverse" is pronounced as /ɜːr/ and the addition of the suffix "-ings" creates a soft "s" sound at the end. This word is commonly used in engineering and physics to describe the process of reversing the direction of flow or rotation.