IPA: //ʌnˈsætʃəreɪt//
KK: /ʌnˈsætʃəˌreɪt/
A type of chemical compound that contains one or more double or triple bonds between carbon atoms, which makes it less saturated with hydrogen than saturated compounds.
An unsaturate can be found in various organic reactions.
Unsaturate → It is formed from "un-" (meaning not) and "saturare" (from Latin, meaning to fill or soak). The word "unsaturate" means to not be filled or soaked, particularly in the context of solutions or compounds that do not contain the maximum amount of solute possible.
Think of 'not filled' ('un-') and 'to soak' ('saturare') to remember that 'unsaturate' means something that is not fully soaked or filled.