Astrol. [f. as prec.] Applied to signs of the Zodiac at equal distances on opposite sides from Cancer and Capricorn.
1658. in Phillips. ibid. (1706), Antiscion-Signs are those which, with reference to each other, are equally distant from the two Tropical Signs Cancer and Capricorn, so that a Planet in such a Station is said to cast its Antiscion, i. e. to give Virtue or Influence to another Star or Planet, that is in the opposite Sign.
1819. J. Wilson, Dict. Astrol., 304. To find the antiscions of any star, recourse must be had to tables of declination.