Google will show both your website's title as well as the meta-description within the search results. Together, they make up the first points of contact that any one searching will have with your content. This is the reason why you should put some effort into animating the searchers to click on your result by optimising not only the title but also the meta-description. The SERP Snippet-Generator can help you with your CTR optimization and will show you how other users will see the searchresult for your website.