Query Processing Details

 The table below shows full details about your query, the thesaurus terms that it contains, and the thesaurus terms that were added to your query to expand it. Each row of this table corresponds to a term in your query. The first column of each row gives the words that you entered in your query. If the term is not a thesaurus term, the remaining columns will be empty. Otherwise, the second column gives the synonyms of the thesaurus term corresponding to your query words. These synonyms are always automatically added to your query. The third column gives thesaurus terms that are more specific than the term corresponding to your query words and that were added to your query: they are added by default, and can be removed by fine-tuning term explosion below in this page. Finally, the fourth column shows definitions for the terms if the definitions exist in the thesaurus.

Your Query Words Synonyms Added to Query More Specific Terms Added to Query Definition
heart attack "Myocardial Infarction";"Heart attack";"Infarction of heart";... more "Shock, Cardiogenic";"Myocardial Stunning"; Gross necrosis of the myocardium, as a result of i...more

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Add Terms From Thesaurus

Use this feature to search for specific terms in the thesaurus and add them to your query.

Find this exact thesaurus term and add it to the query (you must enter the term exactly as it is in the thesaurus)


Enter any word or words and find all thesaurus terms that contain all words entered (you will be able to choose those terms that you wish to add to the query):

The following button will make all changes to the query entered on this page, in the add terms, tune explosion, and boolean query sections.

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Fine Tune Term Explosion: Fine Tune Addition of More Specific Terms to Query

By default, each thesaurus term in your query is "exploded" by adding terms that have similar, but more specific meanings. You can view these terms by following the hyperlink attached to each thesaurus term in your query.

If a thesaurus term is checked below, its more specific terms will be automatically added to your query. Uncheck to suppress this feature.

Your Query Term Thesaurus Term
heart attack Myocardial Infarction

The following button will make all changes to the query entered on this page, in the add terms, tune explosion, and boolean query sections.

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Boolean Query

By default, an OR operator is used between each query term. You can enter a new expression below. Each query term is represented by a letter such as A, B, C ... as shown in the table below. Use only these letters (A, B, C ..) and Boolean operators (AND, OR, NOT, NEAR) in your Boolean query. Note: some search options do not allow some Boolean operators

Your Query Term Letter Representing Term Thesaurus Term
heart attack
A
Myocardial Infarction

To add new query terms to your search, return to search results page first, add the terms, then return here !
Boolean query:

The following button will make all changes to the query entered on this page, in the add terms, tune explosion, and boolean query sections.

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