Joker
Truncation

Truncation is like a wildcard. Added to the stem of a word, it will find that stem plus anything that comes after it. The symbol used to truncate a word depends upon the index, database, or Web search engine you are using.

nurse? will return records on nurses, nurse, and nursed.
? is used as the truncation symbol, for example, in Academic Index.  The question mark in Academic Index stands for only one character
environ* will return records on environment, environments, environmental in Academic Index.  The * in Academic Index stands for any number of characters
 
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