See under .
Usually, polar coordinates. one of two used to locate a point in a plane by the length of its radius vector and the angle this vector makes with the polar axis (polar angle)
noun, Mathematics. 1. the fixed line, usually horizontal, from which the angle made by the radius vector is measured in a polar coordinate system. noun 1. the fixed line in a system of polar coordinates from which the polar angle, θ, is measured anticlockwise
noun 1. a large white bear, Ursus maritimus, of the arctic regions. noun 1. a white carnivorous bear, Thalarctos maritimus, of coastal regions of the North Pole
noun, Cell Biology. 1. one of the minute cells arising from the unequal meiotic divisions of the ovum at or near the time of fertilization. noun 1. (physiol) a tiny cell containing little cytoplasm that is produced with the ovum during oogenesis when the oocyte undergoes meiosis polar body n. Either of two small cells […]
- Polar bond
polar bond A type of covalent bond between two atoms in which electrons are shared unequally. Because of this, one end of the molecule has a slightly negative charge and the other a slightly positive charge. See more at covalent bond.