a natural substance in food that helps your body to be healthy a vitamin a particular time in the development of something a stage a series of tests to discover whether something works and is safe a trial an effect of a medicine that is not intended a side effect someone who studies a subject in detail to discover new information a researcher a small gap under the skin on a person's cheeks that appears when they smile a dimple sweet and attractive-looking cute not real fake https://339efcb25eb75e967b0d-ff8eeadd950d51fd1fc939dca75b3973.ssl.cf1.rackcdn.com/assets_default.swf