|
|
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:
| frequency |
the number of energy waves that pass a certain point in a certain time period. Frequency is used to measure radio waves and other kinds of radiation. [1/3 definitions] |
| lead2 |
a heavy, soft gray metal that is one of the chemical elements. Because it is very heavy and dense, lead is useful for making things such as weights, shot, and shields that protect against radiation. (symbol: Pb) [1/2 definitions] |
| microwave oven |
an oven that cooks or heats food or beverages quickly using high-frequency radiation. |
| ozone layer |
an atmospheric layer between ten and twenty miles above the earth that contains a large amount of ozone, which absorbs certain types of harmful radiation from space. |
| radiation |
When we talk about radiation, we mean particles or waves of energy that are sent out by sources of heat or light. Sunlight is a form of radiation, for example. Some forms of radiation are dangerous. Even sunlight can be bad if people get too much of it. |
| ray1 |
a thin beam of light or some other radiation. [1/3 definitions] |
| X-ray |
a beam of high-energy radiation that is able to pass through many kinds of solid material. [1/3 definitions] |
|
|