Where Did Dictionaries Come From?
Have you ever read a word and had no idea what it meant? You're not alone! People have been collecting word meanings for thousands of years. Long ago, there were no dictionaries at all. If you didn't know a word, you had to ask someone who was older or smarter. That wasn't always easy!
Over time, people started writing down lists of words and their meanings. These early word lists grew into the dictionaries and glossaries we use today. Let's look at how this happened.
So the big question is: How do you use a glossary or dictionary to find the meaning of a word? That's exactly what this lesson will teach you!
Key Ideas to Know
Before we start looking up words, let's learn some important ideas. These will help you understand what a glossary and dictionary are, and why they are so helpful.
What Is a Glossary?
What Is a Dictionary?
Print vs. Digital
Why Look Up Words?
What Does a Glossary Look Like?
Let's take a close look at a glossary page. Notice how the words are in ABC order. Each word is followed by its meaning (called the definition). Some glossaries also tell you what page the word appears on in the book.
As you can see, each entry word is bold. Next to it is the definition, which tells you what the word means. Some glossaries also show the page number where you can find that word in the book. All the words go from A to Z — that's alphabetical order!
How to Look Up a Word
Looking up a word is like a treasure hunt! You follow a few simple steps, and you find the meaning. Let's learn how to do it in both a print (book) dictionary and a digital (online) dictionary.
Steps for a Print Dictionary or Glossary
Steps for a Digital Dictionary
This diagram shows a dictionary entry. At the top of the page are the guide words. The entry word is in bold. Next comes the pronunciation (how to say it), the part of speech (like verb, noun, or adjective), and the definitions. Some entries even have an example sentence to show how the word is used.
Types of Word Tools
There are different kinds of tools you can use to find word meanings. Let's see how they compare. Each one is useful in its own way!
| Feature | Glossary | Beginning Dictionary | Digital Dictionary |
|---|---|---|---|
| Where is it? | Back of your textbook | A separate book | On a computer or phone |
| How many words? | Only words from that book | Thousands of common words | Hundreds of thousands! |
| ABC order? | Yes | Yes | You type and search |
| Pronunciation? | Sometimes | Yes | Yes, often with audio 🔊 |
| Example sentences? | Sometimes | Usually | Yes |
| Pictures? | Rarely | Often | Sometimes |
| Best for… | Words in a specific book | Everyday vocabulary | Quick answers anytime |
As you can see, each tool has its own strengths. A glossary is perfect when you're reading a textbook. A beginning dictionary is great when you hear a new word and want to learn about it. A digital dictionary is the fastest way to look up any word.
Worked Example
Let's practice together! Imagine you're reading this sentence in your science book:
You don't know what metamorphosis means. Let's find out!
Glossary vs. Dictionary — When to Use Each
Both glossaries and dictionaries help you find word meanings, but they work a little differently. Here's when to use each one.
| Situation | Best Tool to Use | Why? |
|---|---|---|
| Reading a science textbook and you see a word you don't know | Glossary | The glossary has the special science words from that book |
| You hear a new word at the park and want to know what it means | Dictionary | A dictionary has everyday words, not just textbook words |
| You're writing a story and need to check if you're using a word the right way | Dictionary | Dictionaries show multiple meanings and example sentences |
| You want to hear how a word is pronounced | Digital Dictionary | Digital dictionaries let you click a button to hear the word |
| You're at your desk with no internet or computer | Print Dictionary | You can always flip through a real book! |
What Comes Next?
Now that you know how to use glossaries and beginning dictionaries, you're ready to take the next step! As you get older and read more, you'll learn even more cool word tools.
| What You Know Now | What You'll Learn Next |
|---|---|
| Looking up a word's meaning | Learning about synonyms (words with similar meanings) and antonyms (words with opposite meanings) using a thesaurus |
| Using a beginning dictionary | Using a full adult dictionary with more details about word history and grammar |
| Finding one definition | Choosing the right definition when a word has many meanings (like "bat" — an animal or a baseball bat?) |
| Knowing ABC order | Using guide words to find words even faster |
Every time you look up a word, your vocabulary gets a little bigger. That makes you a stronger reader, writer, and thinker. Keep being curious about new words — it's one of the best habits you can have!
Practice Problems
Try these problems on your own! Click "Show Answer" when you're ready to check your work.
What You Learned
In this lesson, you learned how to use glossaries and beginning dictionaries — both print and digital — to find the meanings of words you don't know. A glossary is found at the back of a book and only has words from that book. A dictionary is a bigger tool with thousands of words. Both arrange words in alphabetical (ABC) order.
You also learned the parts of a dictionary entry: the entry word, the pronunciation, the part of speech, the definitions, and example sentences. You practiced using guide words to find the right page. Most importantly, you learned that when a word has more than one meaning, you should read all the definitions and pick the one that fits your sentence. Keep looking up new words — every word you learn makes you a stronger reader and writer!