eight

adj. being 8 in number

n. number 8

8 (eight) is the natural number following 7 and preceding 9. The SI prefix for 10008 is yotta (Y), and for its reciprocal yocto (y).
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Noun
1. a group of United States painters founded in 1907 and noted for their realistic depictions of sordid aspects of city life
(synonym) Ashcan School
(hypernym) school

Noun
1. the cardinal number that is the sum of seven and one
(synonym) 8, VIII, eighter, eighter from Decatur, octad, ogdoad, octonary, octet
(hypernym) digit, figure
Adjective
1. being one more than seven
(synonym) 8, viii
(similar) cardinal

(n.)
The number greater by a unit than seven; eight units or objects.
  

(n.)
An island in a river; an ait.
  

(n.)
A symbol representing eight units, as 8 or viii.
  

(a.)
Seven and one; as, eight years.
  

Eight Although infrequently used in occultism, one of the important numerical stages in nature and, therefore, in all occult systems of reckoning and computaton. An inaccurate use of 8, or a use springing from ignorance, can very easily mislead the student of archaic numerology as to its ancient computational value and numerical signification. After remarking that the ancients always referred to seven planets (the sun being included in the septenary), Blavatsky says: "These 'seven' became the eight, the Ogdoad, of the later materialized religions, the seventh, or the highest principle, being no longer the pervading Spirit, the Synthesis, but becoming an anthropomorphic number, or additional unit" (SD 2:358n).
However, the ogdoad of the ancients had a special significance, among other things referring to the addition of the linking unit, whether of a superior or inferior hierarchy, to the septenary hierarchy envisioned at the moment. Furthermore, when the seven sacred planets of the ancients were considered in connection with their relations to earth, this conjoining of the eight units was often called an ogdoad. Hinduism takes cognizance of eight great gods, namely, the eight adityas, and on some of the oldest monuments of India, Persia, and Chaldea one may see the eight-pointed or double cross.
When the figure 8 is placed on its side . . . it symbolizes the eternal and spiral motion of cycles "and is symbolized in its turn by the Caduceus. It shows the regular breathing of the Kosmos presided over by the eight great gods -- the seven from the primeval Mother, the One and the Triad" (SD 2:580). In modern mathematics, it is the symbol for infinity, or for the approach to infinity.