The spelling of the word "Engineerings" includes the plural suffix "-s" added to the word "Engineering". The IPA phonetic transcription for "Engineering" is /ˌɛn.dʒɪˈnɪər.ɪŋ/. The word "Engineerings" refers to multiple branches or fields of engineering. Though not commonly used, it is a grammatically correct form of the word. It is important to note that the singular form, "Engineering", is more commonly used and recognized.
The term "Engineerings" is not a standard English word, and therefore it does not have a specific etymology. However, it appears to be a plural form of the noun "engineering", which means the application of scientific and mathematical principles to design and develop structures, machines, systems, etc.
The noun "engineering" originates from the Latin word "ingeniator", which means "contriver" or "deviser". It later evolved into the Middle English term "enginour" and then became "engineer" in Modern English. The word "ingeniator" itself is derived from "ingenium", meaning "talent" or "resourcefulness", and is related to the Latin verb "ingeniare" which means "to contrive" or "to devise".
The plural form "Engineerings" likely emerged to refer to multiple instances or disciplines of engineering.