WordNet sense 1 (a mixture of two partially miscible liquids A and B produces two conjugate solutions: one of A in B and another of B in A):

conjugate solution

WordNet sense 2 (joined together especially in a pair or pairs):

conjugated, coupled

WordNet sense 3 (characterized by unity; being or joined into a single entity):

united

WordNet sense 4 (of leaf shapes; of leaves composed of several similar parts or lobes):

compound, compound

WordNet sense 5 (held with another element, substance or material in chemical or physical union):

bound