An equestrian lady appeared upon the plains.
Spectator.
3. Belonging to, or composed of, the ancient Roman equities or knights; as, the equestrian order. Burke.
E*ques"tri*an, n. One who rides on horseback; a horseman; a rider.
E*ques"tri*an*ism (?), n. The art of riding on horseback; performance on horseback; horsemanship; as, feats equestrianism.
E*ques"tri*enne` (?), n. [Formed after analogy of the French language.] A woman skilled in equestrianism; a horsewoman.
E"qui- (?). [L. aequus equal. See Equal.] A prefix, meaning equally; as, equidistant; equiangular.
E"qui*an`gled (?), a. [Equi- + angle.] Equiangular. [Obs.] Boyle.
E`qui*an"gu*lar (?), a. [Equi- + angular. Cf. Equangular.] Having equal angles; as, an equiangular figure; a square is equiangular.
Equiangular spiral. (Math.) See under Spiral, n. -- Mutually equiangular, applied to two figures, when every angle of the one has its equal among the angles of the other.
E`qui*bal"ance (?), n. [Equi- + balance.] Equal weight; equiponderance.
E`qui*bal"ance, v. t. [imp. & p. p. Equibalanced (?); p. pr. & vb. n. Equibalancing (?).] To make of equal weight; to balance equally; to counterbalance; to equiponderate.
E`qui*cres"cent (?), a. [Equi- + crescent.] (Math.) Increasing by equal increments; as, an equicrescent variable.
E`qui*cru"ral (?), a. [L. aequicrurius; aequus equal + crus, cruris, leg.] Having equal legs or sides; isosceles. [R.] "Equicrural triangles." Sir T. Browne.