| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 1,761,594,404 visitors served. |
|
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
protractor |
Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson | 0.04 sec. |
protractorInstrument for constructing and measuring plane angles. The simplest protractor is a semicircular disk marked in degrees from 0° to 180°. A more complex protractor, for plotting position on navigation charts, is called a three-arm protractor, or station pointer, and consists of a circular scale connected to three arms. The centre arm is fixed, while the outer two can be rotated to any desired angle relative to the centre one. A related instrument is the course protractor, which allows navigators to measure the angular distance between north and the course plotted on a navigation chart. protractor 1. an instrument for measuring or drawing angles on paper, usually a flat semicircular transparent plastic sheet graduated in degrees 2. a surgical instrument for removing a bullet from the body 3. Anatomy a former term for extensor protractor [′prō‚trak·tər] (engineering) A semicircular instrument used to construct and measure angles formed by intersecting lines of a plane; the midpoint of the diameter of the semicircle is marked and serves as the vertex of angles constructed or measured. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
|
| ? Mentioned in | ? References in periodicals archive | ||
|---|---|---|---|
| The size of each section apportioned to a particular status was measured via the use of a protractor and recorded as a percentage of the whole pie. Position a protractor at the center point of the circle. She's doing geometry and using a protractor in math and she understands it all," says Shayer. |
| Encyclopedia |
| Free Tools: |
For surfers:
Free toolbar & extensions |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|---|