Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun plural Reading, writing, and arithmetic, considered as the fundamentals of elementary education.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Common misspelling of
three Rs .
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[From the phrase reading, 'riting, and 'rithmetic, alteration of reading, writing, and arithmetic.]
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