assistant /əˈsɪstənt/noun 4adjective 2forms 1 noun4 •a person who does part of another person's work in order to help them •(UK) Sales assistant. •A software tool that provides assistance in some task, a wizard program. •(no longer used) Someone who is present; a bystander, a witness. adjective[before a noun]2 •Having a subordinate or auxiliary position. •Helping; lending aid or support; auxiliary.Genius and learning […] are mutually and greatly assistant to each other. — 1790 formsassistants