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| the magnitude or brightness of a star as it appears to an observer on the earth |
| the brightness of a star in comparison with that of the sun: the luminosity of Sirius is expressed as 23 and indicates intrinsic brightness 23 times greater than the sun |
| digit (ˈdɪdʒɪt) | |
| —n | |
| 1. | a finger or toe |
| 2. | Also called: figure any of the ten Arabic numerals from 0 to 9 |
| 3. | another name for finger |
| 4. | astronomy one twelfth of the diameter of the sun or moon, used to express the magnitude of an eclipse |
| [C15: from Latin digitus toe, finger] | |
digit dig·it (dĭj'ĭt)
n.
A finger or toe; dactyl.
digit (dĭj'ĭt) Pronunciation Key
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digit
in anatomy, finger or toe of land vertebrates, the skeleton of which consists of small bones called phalanges. The tips of the digits are usually protected by keratinous structures, such as claws, nails, or hoofs, which may also be used for defense or manipulation. Digits are numbered one through five, beginning with the inside digit (thumb) when the palm (paw) is face downward
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