section /ˈsɛkʃən/noun 23verb 4forms 3 noun23 •a part of something that is separate from the other parts in some way •A group of instruments in an orchestra.The horn section is the group of symphonic musicians who play the French horn. •A part of a document, especially a major part; often notated with §. •A cross-section (image that shows an object as if cut along a plane). •A cross-section perpendicular the longitudinal axis of an aircraft in flight. •Archeological section; vertical plane and cross-section of the ground to view its profile and stratigraphy; part of an archeological sequence. •(informal) Ellipsis of Caesarean section.They had planned to go into my section scar but the surgeon didnʼt think he could see well enough. — 2021 •(New-Zealand) A piece of residential land; a plot. •(US, Canada) Synonym of square mile, a unit of land area, especially in the contexts of Canadian surveys and American land grants and legal property descriptions. •The symbol §, denoting a section of a document. •A cutting; a part cut out from the rest of something. •thin section, a thin slice of material prepared as a specimen for research. •A group of 10-15 soldiers led by a non-commissioned officer and forming part of a platoon. •An incision or the act of making an incision. •(Philippines) A class in a school; a group of students in a regularly scheduled meeting with a teacher in a certain school year or semester or school quarter year. •A taxonomic rank below the genus (and subgenus if present), but above the species. •An informal taxonomic rank below the order ranks and above the family ranks. •A sequence of rock layers. •Angle section, L-section, angle iron, steel angle, slotted angle. •A function that generalizes the notion of the graph of a function; formally, a continuous right inverse to the projection map of a fiber bundle. •A right inverse of a morphism in some category •An object which is defined by analogy with sections of fiber bundles but in a more general setting (that of sheaves). Formally, an element of the image of an open set under the action of a (pre-)sheaf. •An act or instance of cutting. verb4 •To cut, divide or separate into pieces. •To reduce to the degree of thinness required for study with the microscope. •(UK, Australia) To commit (a person) to a hospital for mental health treatment as an involuntary patient. So called after various sections of legal acts regarding mental health.Tribunals were set up as watchdogs in cases of compulsory detention (sectioning). […] Informal patients, however, could be sectioned, and this was often a fear of patients once they were in hospital. — 1998 •To perform a cesarean section on (someone)."But if she's gone into active labour she could be bleeding massively and you may have to section her there and then." — 2012 formssectioned · sectioning · sections
