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Reverse Search
Reverse Search allows you to search within the full text of dictionary entries for words, word parts, and phrases.
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Example: Searching for "apple orange" identifies all entries that contain the word "apple" or the word "orange."
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Example: Searching for "apple orange" identifies all entries that contain the word "apple" or "apples" or "orange" or "oranges."
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Example: Searching for "apple orange" identifies all entries that contain the word "apple" and the word "orange."
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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."
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| alien |
a living being from another planet; extraterrestrial. There is no evidence that aliens exist, but many people believe there is life on other planets. [2/5 definitions] |
| asteroid |
a small, rocky, planet-like body that circles the sun and is mostly found between the orbits of Jupiter and Mars. The size of an asteroid can vary from very tiny to six hundred miles across. |
| climate change |
a major change in Earth's climate that is of current concern and which is associated with an increase in carbon dioxide and certain other gases in Earth's atmosphere. These gases contribute to the increasing temperature of the planet. [1/2 definitions] |
| crust |
the outer layer of Earth, another planet, or a moon. [1/5 definitions] |
| earth |
(often capitalized) the fifth largest planet in our solar system and the third in distance from the sun. [2/4 definitions] |
| earth science |
Earth science is the study of the planet Earth. Earth science is especially interested in what the planet is composed of, its weather, and how the planet developed and continues to change over time. Many different sciences, such as geology and meteorology--the study of weather--are part of earth science. |
| eclipse |
the blocking from view of the sun, a moon, or a planet by another heavenly body. In an eclipse of the sun, the sun is hidden from earth's view by the moon passing between the sun and the earth. [1/3 definitions] |
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