relating to or based on the number twenty
- Twentieth divided into or composed of 20s or twenty parts
- Twentieth; divided into, or composed of, 20s or twenty components.
(a.) Twentieth; split into, or composed of, twenties or twenty parts.
The Aztec numerals, which were vigesimal or reckoned by scores, were depicted by dots or circles up to 20, which was represented by a flag, 400 (a score of scores) by a feather, and 8000 (a score of scores of scores) by a purse; but for convenience these symbols might be halved and quartered, so that 534 might be shown by one feather, one quarter of a feather, one flag, one-half of a flag, and four dots.