n. The act of cutting or dividing; separation by cutting: as, the section of one plane by another.n. A part cut or separated, or regarded as separated, from the rest; a division; a portion.n. One of the squares, each containing 640 acres, into which the public lands of the United States are divided; the thirty-sixth part of a township.n. A certain proportion of a battalion or company told off for military movements and evolutions.n. In mech., any part of a machine that can be readily detached from the other parts, as one of the knives of a mower.n. A division in a sleeping-car, including two seats facing each other, and designed to be made into two sleeping-berths. A double section takes in four seats, two on each side of the car.n. In bookbinding, the leaves of an intended book that are folded together to make one gathering and to prepare them for sewing.n. In printing, that part of a printed sheet of book-work which has to be cut off from the full sheet and separately folded and sewed. On paper of ordinary thickness, the section is usually of eight leaves or sixteen pages; on thick paper, the section is often of four leaves or eight pages.n. The curve of intersection of two surfaces.n. A representation of an object as it would appear if cut by any intersecting plane, showing the internal structure; a diagram or picture showing what would appear were a part cut off by a plane supposed to pass through an object, as a building, a machine, a biological structure, or a succession of strata.n. A thin slice of an organic or inorganic substance cut off, as for microscopic examination.n. In zoology, a classificatory group of no fixed grade or taxonomic rank; a division, series, or group of animals: used, like group, differently by different authors.n. In botany, a group of species subordinate to a genus: nearly the same as subgenus (which see).n. In fortification, the outline of a cut made at any angle to the principal lines other than a right angle.n. The sign §, used either as a mark of reference to a foot-note, or , prefixed to consecutive numerals, to indicate divisions of subdivisions of a book.n. = Syn.2. Division, Piece, etc. See part, n.To make a section of; divide into sections, as a ship; cut or reduce to the degree of thinness required for study with the microscope.n. n. In petrography, in the quantitative classification of igneous rocks (see rock), a subdivision of any of the taxonomic divisions from class to subgrad. It is used wherever it is considered necessary to introduce a further subdivision.n. In geology, a group of several related stages, usually of the same kind of sedimentary rock; a series or formation.n. In function-theory, a line in the plane of the variable of a function upon crossing which the function abruptly changes its value.To cut sections; divide into sections.
