A Segment

A length of some object.
One of the parts into which any body naturally separates or is divided; a part divided or cut off; a section; a portion.
(mathematics) A portion.
1. A straight path between two points that is the shortest distance between them.
2. (geometry) The part of a circle between its circumference and a chord (usually other than the diameter).
3. (geometry) The part of a sphere cut off by a plane.
4. (topology) Any of the pieces that constitute an order tree.
(sciences) A portion.
1. (phonology) A discrete unit of speech: a consonant or a vowel.
2. (botany) A portion of an organ whose cells are derived from a single cell within the primordium from which the organ developed.
3. (zoology) One of several parts of an organism, with similar structure, arranged in a chain; such as a vertebra, or a third of an insect's thorax.
(broadcasting) A part of a broadcast program, devoted to a topic.
(computing) An Ethernet bus.
(computing) A region of memory or a fragment of an executable file designated to contain a particular part of a program.
(travel) A portion of an itinerary: it may be a flight or train between two cities, or a car or hotel booked in a particular city.
(heraldry) A bearing representing only one part of a rounded object.