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Having a double margin, as certain shells.

The condition of having two mammæ or teats.

Having two members; as, a bimembral sentence. J. W. Gibbs.

Having two adductor muscles, as a bivalve mollusk.

A salt having two equivalents of arsenic acid to one of the base. Graham.

Having only two nerves, as the wings of some insects.

Having two eyes. "Most animals are binocular." Derham.

Having two eyes.

Having two names; -- used of the system by which every animal and plant receives two names, the one indicating the genus, the other the species, to which it belongs. Binomial theorem (Alg.), the theorem which expresses the law of formation of any power of a binomial.

A salt having two equivalents of oxalic acid to one of the base; an acid oxalate.

Having two nuclei; as, binucleate cells.

Having two nucleoli.

Having two ocelli (eyelike spots); -- said of a wing, etc.

A tiny mass of bioplasm, in itself a living unit and having formative power, as a living white blood corpuscle; bioblast.

Being in two parts; having two correspondent parts, as a legal contract or writing, one for each party; shared by two; as, a bipartite treaty.

Having two margins toothed like a comb.

Having two feet; two-footed. By which the man, when heavenly life was ceased, Became a helpless, naked, biped beast. Byrom.

Having two feet; biped.

Having a shell or covering like a double shield.

Having two wings. "Bipennated insects." Derham.