Sep*til"lion (?), n. [F. septilion, formed fr. L. septem seven, in imitation of million.]

According to the French method of numeration (which is followed also in the United States), the number expressed by a unit with twenty-four ciphers annexed. According to the English method, the number expressed by a unit with forty-two ciphers annexed. See Numeration.

 

© Webster 1913.

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