* Sect: A group of people with shared beliefs or doctrines, often considered a subdivision of a larger group (from the idea of a "cutting" away from the main group).
* Dissect: To cut apart for examination (literally "cut apart").
* Insecticide: A substance that kills insects (literally "insect-cutter").
* Secant: A line that intersects a curve at two points (from the idea of "cutting" through the curve).
* Section: A part of something that is divided into separate parts (literally "a cutting").
* Sector: A part of a circle bounded by two radii and an arc (literally "a cutting").
* Sectional: Relating to or involving a section (literally "of a cutting").
* Bisection: The division of something into two equal parts (literally "a cutting in two").
While less common, other words also utilize this root:
* Sectiform: Shaped like a cutting or incision.
* Sectilinear: Made up of straight lines.
Let me know if you'd like to explore other word roots or have any other language-related questions!