n. External form, figure, or shape, especially as resulting from the disposition and relation of the parts; external aspect or appearance: contour.n. In astrology, relative position or aspect of the planets.n. In modern astron., any noticeable grouping of stars which may aid in identifying them.n. In analytical mechanics, the relative positions of the parts of a system at any moment.n. In geometry, a ruled surface considered as a locus of rays; also, a system of three linear complexes.n. A system of a finite number of points with their duals.n. In organic chemistry, the arrangement of the atoms within the molecule, especially that arrangement in space which occasions optical activity.n. A tetrastim with dots in A tetragram with sides in a a conic range has each pair conic pencil has each pair of of codots costraight with a diagonals copunctal with a pair of fan points of the pair of connectors of the tetragram of tangents at tetrastim of contacts on the the dots. sides.