[adj] having two sides or parts [adj] having identical parts on each side of an axis
bilaterally symmetric, bilaterally symmetrical, bipartite, isobilateral, joint, symmetric, symmetrical, two-party, two-sided, two-way
many-sided, multilateral, one-sided, unilateral
ambidextrous, bifacial, bifold, biform, bifurcated, binary, binate, biparous, bipartisan, bipartite, bivalent, conduplicate, dichotomous, dihedral, disomatous, double, double-faced, duadic, dual, dualistic, duple, duplex, duplicate, duplicated, dyadic, fl