
1) Cluster of stars 2) Constellation 3) Former constellation 4) Small constellation 5) Star
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1) Plough
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https://www.crosswordclues.com/clue/asterism
[astronomy] In astronomy, an asterism is a pattern of stars recognized on Earth`s night sky. It may form part of an official constellation, or be composed of stars from more than one. Like constellations, asterisms are in most cases composed of stars which, while they are visible in the same general direction, are not physically related, of...
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http://en.wikipedia.org/wiki/Asterism_(astronomy)
[gemology] Asteria, or star stone (from Gr. star) is a name applied to ornamental stones that exhibit a luminous star when cut en cabochon. The typical asteria is the star-sapphire, generally a bluish-grey corundum, milky or opalescent, with a star of six rays. In red corundum the stellate reflection is less common, and hence the star-ruby ...
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http://en.wikipedia.org/wiki/Asterism_(gemology)
[typography] In typography, an asterism, from the Greek astēr (`star`), is a rarely used and nearly obsolete symbol consisting of three asterisks placed in a triangle (⁂). It is used to `indicate minor breaks in text,` call attention to a passage, or to separate sub-chapters in a book. It is Unicode character {unichar|2042|Asterism|html=...
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http://en.wikipedia.org/wiki/Asterism_(typography)

is a pattern of stars recognized on Earth's night sky. It may form part of an official constellation, or be composed of stars from more than one.
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http://en.wikipedia.org/wiki/Glossary_of_astronomy

star-like phenomenon caused by light reflecting from tiny fiber-like inclusions that are perpendicular to the crystal faces; the number of rays depends on the cut of the gem in concert with the orientation of the inclusions.
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http://gemologyproject.com/wiki/index.php?title=Glossary_of_Terms

cluster of three asterisks arranged in triangle to draw attention to passage
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http://phrontistery.info/a.html

is a group of starts. Also a pattern of stars seen from earth which is not part of an established constellation.
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http://planetfacts.org/space-terms/

• (n.) A constellation. • (n.) An optical property of some crystals which exhibit a star-shaped by reflected light, as star sapphire, or by transmitted light, as some mica. • (n.) A small cluster of stars. • (n.) An asterisk, or mark of reference. • (n.) Three asterisks placed in this manner, /, to direct attention to a par...
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http://thinkexist.com/dictionary/meaning/asterism/

(from the article `constellation`) From the earliest times the star groups known as constellations, the smaller groups (parts of constellations) known as asterisms, and, also, ...
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http://www.britannica.com/eb/a-z/a/115

in mineralogy, starlike figure exhibited in light reflected or transmitted by some crystals. The stars shown by star sapphires, some phlogopite ...
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http://www.britannica.com/eb/a-z/a/115

A distinctive pattern of stars in the sky but not including any of the 88 recognized constellations. Asterisms that form part of a single constellations include the Big Dipper (part of Ursa Major), the Northern Cross (part of Cygnus), the Square of Pegasus, Orion's Belt, the Sickle (part of Leo), th...
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http://www.daviddarling.info/encyclopedia/A/asterism.html

A pattern of stars larger than a cluster but smaller than a constellation. Examples of an asterism would be Orion's Belt, or The Hyades in Taurus.
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http://www.encyclo.co.uk/local/20448

1. <astronomy> A constellation. A small cluster of stars. ... 2. An asterisk, or mark of reference. Three asterisks placed in this manner, <asterism/, to direct attention to a particular passage. ... 3. <chemistry> An optical property of some crystals which exhibit a star-shaped by reflected light, as star sapphire, or by transmitted...
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http://www.encyclo.co.uk/local/20973

The appearance of a rayed figure or rayed star in agemstone, caused by the reflection of light from minuteinclusions. Star Sapphires and Star Rubies are two well-knownexamples of gemstones featuring a rayed star.
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http://www.encyclo.co.uk/local/22148

Effect exhibited on some minerals (usually only in polished cabochons) causing it to reflect a billowy, star-like formation of concentrated light which moves around when the mineral is rotated. Asterism is caused by dense inclusions of tiny, parallel, slender, fibers in the mineral which cause the light to reflect in such an interesting manner. Mi...
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http://www.encyclo.co.uk/local/22291
As`ter·ism noun [ Greek ..., from
'asth`r star; confer French
astérisme .]
1. (Astron.) (a) A constellation. [ Obsolete]
(b) A small cluster of stars.
2. (Printing) (a) An asterisk, or mark of reference. [ R.]
(b) Thr...
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http://www.encyclo.co.uk/webster/A/135

Asterism is n optical effect in which a four- or six-rayed star can be seen in a mineral.
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http://www.probertencyclopaedia.com/browse/HA.HTM

The luminous property that some gemstones like Star Sapphires have, whereby their inclusions are aligned in such a way that they reflect light in the pattern of a 4, 6 or 12 rayed star
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http://www.saffronart.com/sitepages/jewelry/glossary.aspx

Any prominent star pattern that isnt a whole constellation, such as the Northern Cross or the Big Dipper.
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http://www.skyandtelescope.com/astronomy-terms/

Star-shaped rays of light which meet at a point. Formed like cat's eye, except that the reflecting fibres lie in different directions.
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https://www.encyclo.co.uk/local/20501

A group of stars which are traditionally imagined to represent a pattern (for example, Orion) within an area, known as a constellation, on the celestial sphere. See also: Star.
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https://www.encyclo.co.uk/local/20687
noun (astronomy) a cluster of stars (or a small constellation)
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https://www.encyclo.co.uk/local/20974

· a group of stars. · a constellation.
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https://www.infoplease.com/dictionary/asterism
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