The term R-O-R' refers to the general structure of an ether, where 'R' and 'R'' represent alkyl or aryl groups bonded to the central oxygen atom. Ethers are a class of organic compounds that contain an oxygen atom connected to two alkyl or aryl substituents, and this notation is used to describe their basic molecular arrangement.
congrats on reading the definition of R-O-R'. now let's actually learn it.