chiliaëdron

Noun

 * 1) * 1689–1700,, An Eſſay Concerning Humane Underſtanding (fourth edition, 1700), book II, chapter xxix, § 13, page 204:
 * In a Man who ſpeaks of a Chiliaëdron, or a Body of a thouſand ſides, the of the Figure may be very confuſed, though that of the Number be very diſtinct; ſo that he being able to diſcourſe, and demonſtrate concerning that part of his complex, which depends upon the Number of a Thouſand, he is apt to think, he has a diſtinct  of a Chiliaëdron; though it be plain, he has no preciſe  of its Figure, ſo as to diſtinguiſh it, by that, from one that has but 999 ſides.
 * In a Man who ſpeaks of a Chiliaëdron, or a Body of a thouſand ſides, the of the Figure may be very confuſed, though that of the Number be very diſtinct; ſo that he being able to diſcourſe, and demonſtrate concerning that part of his complex, which depends upon the Number of a Thouſand, he is apt to think, he has a diſtinct  of a Chiliaëdron; though it be plain, he has no preciſe  of its Figure, ſo as to diſtinguiſh it, by that, from one that has but 999 ſides.