Define the following term：radiation
RADIATION IS A SEMANTIC PROCESS IN WHICH THE PRIMARY MEANING STANDS AT THE CENTRE AND THE SECONDARY MEANINGS PROCEED OUT OF IT IN EVERY DIRECTION LIKE RAYS.
Define the following term：radiation
RADIATION IS A SEMANTIC PROCESS IN WHICH THE PRIMARY MEANING STANDS AT THE CENTRE AND THE SECONDARY MEANINGS PROCEED OUT OF IT IN EVERY DIRECTION LIKE RAYS.
