Searching the Major Concepts Index
This search aid allows you to select one or more major concepts to add to
your search query.
Enter a word or phrase in the text box. Boolean operators (AND, OR, NOT) and
wildcards (* ? $) are permitted.
Click the Find button to go to a list of terms that contain
the characters that you entered. For example, if you enter
pharma* as the search term, the product finds every item in the
index that is associated with this term, such as Pharmacy and Pharmacology. The
product will also find other major concepts, such as Metabolism.
Click the Add button to select an item from the list. The
selected item is added to the text box at the bottom of the page.
Click OK to transfer the selected item(s) to the Major
Concepts field on the Search page.
If you are performing an Advanced Search, the product transfers the selected
item(s) to the field box on the Advanced Search page along with the correct
field tag. For example, MC=(Pharmacy OR Pharmacology).
Browsing for Major Concepts
Click the View in Hierarchy
icon to browse for terms that fall within the same hierarchy as the selected
Click the View Related Taxa Notes
icon to display additional information that describe how a term or code is used
and/or provide historical information about its use.
Click the Expand Term
icon to display narrower terms.
Note: Go to our Major
Concepts help page for a complete list of major concepts.
Major Concepts Example
The term Animal care finds:
- Animal Care
- Animal Husbandry
- Veterinary Medicine
About Major Concepts
- 77 top level major concepts
- 91 narrow concepts
- 168 total concepts
- 22 top level major concepts have narrower concepts
Information About ...
Go to our glossary for a definition of the
- Broader Term
- Concept Code
- Narrower Term
- Related Term
- Scope Note