Prismatic compass

Prismatic compass
Prismatic Pris*mat"ic, Prismatical Pris*mat"ic*al, a. [Cf. F. prismatique.] 1. Resembling, or pertaining to, a prism; as, a prismatic form or cleavage. [1913 Webster]

2. Separated or distributed by a prism; formed by a prism; as, prismatic colors. [1913 Webster]

3. (Crystallog.) Same as {Orthorhombic}. [1913 Webster]

{Prismatic borax} (Chem.), borax crystallized in the form of oblique prisms, with ten molecules of water; -- distinguished from octahedral borax.

{Prismatic colors} (Opt.), the seven colors into which light is resolved when passed through a prism; primary colors. See {Primary colors}, under {Color}.

{Prismatic compass} (Surv.), a compass having a prism for viewing a distant object and the compass card at the same time.

{Prismatic spectrum} (Opt.), the spectrum produced by the passage of light through a prism. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • prismatic compass — noun : a surveyor s hand compass provided with a triangular glass prism so adjusted that the compass can be read while taking a sight * * * a hand compass equipped with sights and prisms to permit aiming the instrument at a point and at the same… …   Useful english dictionary

  • prismatic compass —    A compass with a prism attached so that the compass card can be read at the same time as the compass is directed into the line of sight to a distance point [25] …   Lexicon of Cave and Karst Terminology

  • prismatic compass — a hand compass equipped with sights and prisms to permit aiming the instrument at a point and at the same time reading the compass direction of the point. [1850 55] * * * …   Universalium

  • prismatic compass — noun A compass, equipped with a small prism, that allows the heading to be read while sighting …   Wiktionary

  • Prismatic — Pris*mat ic, Prismatical Pris*mat ic*al, a. [Cf. F. prismatique.] 1. Resembling, or pertaining to, a prism; as, a prismatic form or cleavage. [1913 Webster] 2. Separated or distributed by a prism; formed by a prism; as, prismatic colors. [1913… …   The Collaborative International Dictionary of English

  • Prismatic borax — Prismatic Pris*mat ic, Prismatical Pris*mat ic*al, a. [Cf. F. prismatique.] 1. Resembling, or pertaining to, a prism; as, a prismatic form or cleavage. [1913 Webster] 2. Separated or distributed by a prism; formed by a prism; as, prismatic colors …   The Collaborative International Dictionary of English

  • Prismatic colors — Prismatic Pris*mat ic, Prismatical Pris*mat ic*al, a. [Cf. F. prismatique.] 1. Resembling, or pertaining to, a prism; as, a prismatic form or cleavage. [1913 Webster] 2. Separated or distributed by a prism; formed by a prism; as, prismatic colors …   The Collaborative International Dictionary of English

  • Prismatic spectrum — Prismatic Pris*mat ic, Prismatical Pris*mat ic*al, a. [Cf. F. prismatique.] 1. Resembling, or pertaining to, a prism; as, a prismatic form or cleavage. [1913 Webster] 2. Separated or distributed by a prism; formed by a prism; as, prismatic colors …   The Collaborative International Dictionary of English

  • Compass — This article is about the direction finding instrument used in navigation. For other uses, see Compass (disambiguation). A simple dry magnetic pocket compass …   Wikipedia

  • prismatic — pris|mat|ic [prızˈmætık] adj 1.) using or containing a ↑prism ▪ a prismatic compass 2.) a prismatic colour is very clear and bright …   Dictionary of contemporary English

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