Astrol. Obs. Also co-. [n. of agent in L. form from CONSIGNIFY.] A conjoint significator: see quots.

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1647.  Lilly, Chr. Astrol., vi. 49. Cosignificator is when you find another Planet in aspect or conjunction with that Planet who is the principall significator.

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1652.  Gaule, Magastrom., 87. In every house, the order, nomenclature, signification, joy, consignificator, etc.

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1819.  Jas. Wilson, Dict. Astrol., s.v., Aries is a cosignificator of all ascendants.

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