Meta Description

Keyword positioning is essential part of seo tips place it in following heads:
Placing keywords in Title tag is very important part of seo tips . Title should be small and concise. 70 characters are enough for Google. Keywords should be place in organic way. Repetitions always are not highly recommended when web pages come on SERP.
Meta Description SEO best practices. Meta Descriptions are commonly used by search engines on search result pages to display preview .
Document description. Use the <meta> element to describe the document. Document keywords. Use the <meta> element to define the keywords
So  describes the meta description tag and provides tips for search engine optimization with meta description tags.