pre·con·cep·tion 
/ˌpri:kənˈsɛpʃən/ noun
plural pre·con·cep·tions /ˌpri:kənˈsɛpʃən/ noun [count] : an idea or opinion that someone has before learning about or experiencing something directly
▪ I came to the lecture without any preconceptions. — often + about or of ▪ He's changing people's preconceptions about/of modern art.
▪ I came to the lecture without any preconceptions. — often + about or of ▪ He's changing people's preconceptions about/of modern art.
