from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A triangle of numbers in which a row represents the coefficients of the binomial series. The triangle is bordered by ones on the right and left sides, and each interior entry is the sum of the two entries above.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A geometric representation of the binomial coefficients in a triangle, each entry being the sum of the two entries above.
After Blaise Pascal.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Blaise Pascal French mathematician (Wiktionary)
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