* The Glossary: Many informational books, especially textbooks, have a glossary at the back. This is a list of important words and their definitions specific to the book's subject.
* The Footnote or Endnote: Some books use footnotes or endnotes to provide definitions or further explanations of specific words. Look for superscript numbers in the text that correspond to notes at the bottom of the page or at the end of the book.
* The Index: While it doesn't directly define words, the index can help you find pages where the word is used in context. This can give you clues about its meaning.
* The Text Itself: Sometimes, the meaning of an important word is explained within the text itself. Look for words like "means," "refers to," or "is defined as" near the word you're looking for.
* A Dictionary: If you can't find the definition in the book itself, a regular dictionary is your best bet.
Pro Tip: If you're still unsure, try to understand the word's meaning from its context in the sentence and paragraph. Use the surrounding information to make an educated guess about its definition.