protractor

pro·trac·tor

P0619200 (prō-trăk′tər, prə-)n.1. A semicircular instrument for measuring and constructing angles.2. Anatomy A muscle that extends a limb or other part.

protractor

(prəˈtræktə) n1. (Mathematics) an instrument for measuring or drawing angles on paper, usually a flat semicircular transparent plastic sheet graduated in degrees2. a person or thing that protracts3. (Surgery) a surgical instrument for removing a bullet from the body4. (Anatomy) anatomy a former term for extensor

pro•trac•tor

(proʊˈtræk tər, prə-)

n. 1. (in surveying, mathematics, etc.) an instrument having a graduated arc for plotting or measuring angles. 2. one that protracts. 3. any muscle that serves to extend a part of the body; extensor.

Thesaurus

Noun

protractor - drafting instrument used to draw or measure anglesdrafting instrument - an instrument used by a draftsman in making drawings

Translations

量角器

protractor

(prəˈtrӕktə) , ((American) prou-) noun an instrument for drawing and measuring angles. 量角器

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

an instrument used to construct and measure angles in sketches and on charts. A protractor consists of a straightedge and a semicircle that is graduated in degrees from 0° to 180°. The precision of a protractor increases as its size becomes larger: the larger the semicircle, the smaller the value of a division. Protractors for very precise construction and measurement of angles—for example, in navigation—are equipped with a transparent straightedge and a goniometric vernier that rotates about the midpoint of the diameter of the semicircle.

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.

protractor

An instrument graduated in angular degrees for measuring or laying out angles.

protractor

A navigational instrument for measuring angles (headings, tracks, and bearings) on a map or a chart.

protractor

[pro-trak´ter] 1. a muscle that pulls a part forward; see also retractor.2. a semicircular device for measuring and constructing angles.

pro·trac·tor

(prō-trak'tŏr, -tōr), A muscle drawing a part forward, as antagonistic to a retractor (for example, the serratus anterior muscle is a protractor of the scapula; the lateral pterygoid muscle is a protractor of the mandible). [L. pro-traho, pp. -tractus, to draw forth]

protractor

(prō-trăk′tər, prə-)n.1. A semicircular instrument for measuring and constructing angles.2. Anatomy A muscle that extends a limb or other part.

pro·trac·tor

(prō-trak'tǒr) A muscle drawing a part forward, as antagonistic to a retractor. [L. pro-traho, pp. -tractus, to draw forth]

protractor

1. Instrument used to measure or set out angles on paper. 2. A scale containing a circle graduated in degrees and a set of axes emerging from the centre of the circle used to set the axis of an astigmatic ophthalmic lens. It also includes various other scales for positioning the optical centre of lenses.

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Words related to protractor

noun drafting instrument used to draw or measure angles

Related Words