MeSH (Medical Subject Headings) is the U.S. National Library of Medicine's controlled vocabulary, a standard collection of terms used to index article contents.
When searching for a MeSH term such as flu in the MeSH database, the results will include:
Using the MeSH browser feature of PubMed helps you to translate your term into the vocabulary of the database. For example, your entry term: "texting" gets translated to text messaging, the MeSH term:
Below are more examples: