TRILLION, noun tril'yun. [a word formed arbitrarily of three, or Gr. million.] The product of a million multiplied by a million, and that product multiplied by a million; or the product of the square of a million multiplied by a million. Thus 1, 000, 000 x 1, 000, 000=1, 000, 000, 000, 000, and this product multiplied by a million= 1, 000, 000, 000, 000, 000, 000.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI