Such a division involving apparently incompatible or opposite principles; a duality.
The division of a genus into two species; a division into two subordinate parts.
A phase of the moon when it appears half lit and half dark, as at the quadratures.
A separation or division into two; a distinction that results in such a division.
The division of a class into two disjoint subclasses that are together comprehensive, as the division of man into white and not white.
Division and subdivision; bifurcation, as of a stem of a plant or a vein of the body into two parts as it proceeds from its origin; often successive.
A duality that is an involution, i.e. has order two. ᵂᵖ
The separation, alignment or orientation of something into two opposed poles.
The dipole-dipole intermolecular forces between the slightly positively-charged end of one molecule to the negative end of another or the same molecule. ᵂᵖ
The division of an embryo into an animal pole and a vegetal pole within a blastula. ᵂᵖ
The grammatical category of the affirmative and the negative. ᵂᵖ
Any of the various ways in which power is distributed within the international system. ᵂᵖ
Either of the two extremes of such attributes.
Spatial differences in shape, structure, and function within a cell. ᵂᵖ
A measure of the electrical potential at the ends of a circuit. ᵂᵖ
An indicator of the positivity or negativity of a literal. ᵂᵖ
The concept of dualism between masculine and feminine. ᵂᵖ
The direction of a wave's amplitude or its being in phase or antiphase.