cor·ol·lar·y   (kôr'ə-lěr'ē, kŏr'-)    n.   pl. cor·ol·lar·ies A proposition that follows with little or no proof required from one already proven. A deduction or an inference. A natural consequence or effect; a result. adj.  Consequent; resultant. [Middle English corolarie, from Latin corōllārium, money paid for a garland, gratuity, from corōlla, small garland; see corolla.]

Corollary

Cor"ol*la*ry\ (k?r"?l-l?-r?; 277), n.; pl. Corollaries (-r?z). [L. corollarium gift, corollary, fr. corolla. See Corolla.]

1. That which is given beyond what is actually due, as a garland of flowers in addition to wages; surplus; something added or superfluous. [Obs.]

Now come, my Ariel; bring a corollary, Rather than want a spirit. --Shak.

2. Something which follows from the demonstration of a proposition; an additional inference or deduction from a demonstrated proposition; a consequence.

corollary 

corollary   (kôr'ə-lěr'ē)  Pronunciation Key  A statement that follows with little or no proof required from an already proven statement. For example, it is a theorem in geometry that the angles opposite two congruent sides of a triangle are also congruent. A corollary to that statement is that an equilateral triangle is also equiangular.