Organolithium compounds, also known as alkyl lithiums, are a category of metalorganic compounds that contain at least one carbon-lithium bond. These compounds are highly reactive and are used extensively in organic synthesis. Some synonyms for organolithium compound include alkyl lithium, organolithium reagent, and organolithium salt. Similarly, other metalorganics, such as Grignard reagents, are used in combination with organolithium compounds to create complex organic molecules. These highly reactive compounds also find applications in pharmaceuticals, polymers, and materials science, among other areas. In summary, organolithium compounds are versatile and important compounds in organic synthesis and have various synonyms.