[1] : The Collaborative International Dictionary of English v.0.48

section \sec"tion\, n. l. sectio, fr. secare, sectum, to cut;
   akin to e. saw a cutting instrument: cf. f. section. see
   saw, and cf. scion, dissect, insect, secant,
   segment.
   1. the act of cutting, or separation by cutting; as, the
      section of bodies.
      1913 webster

   2. a part separated from something; a division; a portion; a
      slice. specifically: 
      1913 webster
      a a distinct part or portion of a book or writing; a
          subdivision of a chapter; the division of a law or
          other writing; a paragraph; an article; hence, the
          character sect, often used to denote such a
          division.
          1913 webster

                it is hardly possible to give a distinct view of
                his several arguments in distinct sections.
                                                  --locke.
          1913 webster
      b a distinct part of a country or people, community,
          class, or the like; a part of a territory separated by
          geographical lines, or of a people considered as
          distinct.
          1913 webster

                the extreme section of one class consists of
                bigoted dotards, the extreme section of the
                other consists of shallow and reckless empirics.
                                                  --macaulay.
          1913 webster
      c one of the portions, of one square mile each, into
          which the public lands of the united states are
          divided; one thirty-sixth part of a township. these
          sections are subdivided into quarter sections for sale
          under the homestead and preemption laws.
          1913 webster

   3. geom. the figure made up of all the points common to a
      superficies and a solid which meet, or to two superficies
      which meet, or to two lines which meet. in the first case
      the section is a superficies, in the second a line, and in
      the third a point.
      1913 webster

   4. nat. hist. a division of a genus; a group of species
      separated by some distinction from others of the same
      genus; -- often indicated by the sign sect.
      1913 webster

   5. mus. a part of a musical period, composed of one or more
      phrases. see phrase.
      1913 webster

   6. the description or representation of anything as it would
      appear if cut through by any intersecting plane; depiction
      of what is beyond a plane passing through, or supposed to
      pass through, an object, as a building, a machine, a
      succession of strata; profile.
      1913 webster

   note: in mechanical drawing, as in these illustrations of a
         cannon, a longitudinal section a usually represents
         the object as cut through its center lengthwise and
         vertically; a cross or transverse section b, as cut
         crosswise and vertically; and a horizontal section c,
         as cut through its center horizontally. oblique
         sections are made at various angles. in architecture, a
         vertical section is a drawing showing the interior, the
         thickness of the walls, etc., as if made on a vertical
         plane passed through a building.
         1913 webster

   angular sections math., a branch of analysis which treats
      of the relations of sines, tangents, etc., of arcs to the
      sines, tangents, etc., of their multiples or of their
      parts. r.

   conic sections. geom. see under conic.

   section liner drawing, an instrument to aid in drawing a
      series of equidistant parallel lines, -- used in
      representing sections.

   thin section, a section or slice, as of mineral, animal, or
      vegetable substance, thin enough to be transparent, and
      used for study under the microscope.
      1913 webster

   syn: part; portion; division.

   usage: section, part. the english more commonly apply the
          word section to a part or portion of a body of men;
          as, a section of the clergy, a small section of the
          whigs, etc. in the united states this use is less
          common, but another use, unknown or but little known
          in england, is very frequent, as in the phrases "the
          eastern section of our country," etc., the same sense
          being also given to the adjective sectional; as,
          sectional feelings, interests, etc.
          1913 webster
see also:
saw scion dissect insect secant segment 
phrase angular sections conic sections conic section liner 
thin section section part 

Section >> S Words
Section, definition of term: Section
section_pag1.html

Liner >> L Words
Liner, definition of term: Liner
liner_pag1.html

Golden Section >> G Words
Golden Section, definition of term: Golden Section
golden+section_pag1.html

Cross Section >> C Words
Cross Section, definition of term: Cross Section
cross+section_pag1.html