|
|
Reverse Search
Reverse Search allows you to search within the full text of dictionary entries for words, word parts, and phrases.
Search for entries that contain:
Exact matches of any of the individual words entered in the search box.
Example: Searching for "apple orange" identifies all entries that contain the word "apple" or the word "orange."
Any form of any of the individual words entered in the search box.
Example: Searching for "apple orange" identifies all entries that contain the word "apple" or "apples" or "orange" or "oranges."
Exact matches of all of the individual words entered in the search box.
Example: Searching for "apple orange" identifies all entries that contain the word "apple" and the word "orange."
The exact sequence of words and/or characters entered in the search box (for example, a fragment of a word, a single word, multiple words, or even a phrase containing punctuation)
Example: Searching for "a variety of apple" identifies all entries that contain that phrase. Searching for "app" identifies all entries that contain the letters "app," such as occurrences of "apple," "application," and "apply."
Search within these fields:
Optional:
Limit by part of speech:
| atom |
Atoms are very tiny things in the universe. We cannot see them with our eyes, but they make up everything around us and in space. Chemical elements, which are the building blocks of all substances, are made up of atoms. Some chemical elements that you may know are gold, copper, helium, oxygen, mercury, and lead. Each of these elements is made up of a different kind of atom. |
| He |
symbol of the chemical element helium. |
| helium |
Helium is a gas that is one of the chemical elements. If you fill a balloon with helium, it will rise through the air because helium is lighter in weight than air. The chemical symbol is He. |
|
|