mainstream What is the Definition of mainstream?Noun:the prevailing current of thought Other meanings of mainstream (synonyms, cognates). ENRU mainstream основнойпоток Frequently viewed: chat meaningtypical in a sentencereasonable meaningbottleneck meaningexpress meaningport definitionreliability meaningcultural meaningcope meaningdefinition of briefseem meaningtransition meaning A B C D E F G H I J K L M N O P Q R S T U V W X Y Z