
1) Dilution substance 2) Former sheep herder 3) Substance added as a diluent
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https://www.crosswordclues.com/clue/extender
[ink] An extender, also known as a filler, in printing ink technology is a white transparent, or semi-transparent, component whose purpose is to reduce the cost of the ink, by increasing the area covered by a given weight of pigment. They generally have little colouring power. ==Composition and Properties== Extenders are typically white ino...
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http://en.wikipedia.org/wiki/Extender_(ink)
[set theory] In set theory, an extender is a set which represents an elementary embedding having large cardinal properties. A nonprincipal ultrafilter is the most basic case of an extender. A (κ, λ)-extender can be defined as an elementary embedding of some model M of ZFC- (ZFC minus the power set axiom) having critical point κ ε M, and...
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http://en.wikipedia.org/wiki/Extender_(set_theory)

• (n.) One who, or that which, extends or stretches anything.
Found on
http://thinkexist.com/dictionary/meaning/extender/

(from the article `diatomaceous earth`) ...to almost all industrial filtration applications, including the processing of oils, alcoholic and nonalcoholic beverages, antibiotics, solvents, ...
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http://www.britannica.com/eb/a-z/e/61

a liquid or solid substance added to a resin or a plastic to reduce cost
Found on
http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=212-05-39

(ek-sten´dәr) something that enlarges or prolongs; called also expander. artificial plasma extender a substance that can be transfused to maintain fluid volume of the blood in event of great necessity, supplemental to the use of whole blood and plasma. Called also plasma vo...
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http://www.encyclo.co.uk/local/21001

Ingredients added to paint to increase coverage, reduce cost, achieve durability, alter appearance, control rheology and influence other desirable properties. Less expensive than prime hiding pigments such as titanium dioxide. Examples: barium sulphate, calcium carbonate, clay, gypsum, silica, talc. May also improve coating performance.
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http://www.encyclo.co.uk/local/21079

Inexpensive and inert pigment added to paint for bulk and to lower costs.
Found on
http://www.encyclo.co.uk/local/21452

Inexpensive and inert pigment added to paint for bulk and to lower costs.
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http://www.encyclo.co.uk/local/22428
Ex·tend'er noun One who, or that which, extends or stretches anything.
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http://www.encyclo.co.uk/webster/E/95

Fluid added to collected semen to increase or "extend" the volume
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http://www.thehorse.com/Glossary.xhtml?L=E

A material added to a plastic compound used to reduce the amount of resin required per unit value.
Found on
https://www.automotiveplastics.com/resources/glossary/

A material added to a plastic compound used to reduce the amount of resin required per unit value.
Found on
https://www.emcoplastics.com/plastic-glossary-of-terms/

USAF designation for KC-10 tanker aircraft [US]
Found on
https://www.encyclo.co.uk/local/20785

Inexpensive and inert pigment added to paint for bulk and to lower costs.
Found on
https://www.encyclo.co.uk/local/21303

A white pigment added to a colored pigment to reduce its intensity and improve its working qualities.
Found on
https://www.encyclo.co.uk/local/22539

a substance added to another substance, as to paint or food, to increase its volume or bulk: to add cereal and soy protein to hamburger as extenders. · See under(def. 8).
Found on
https://www.infoplease.com/dictionary/extender

a material added to a plastic composition to reduce its cost.
Found on
https://www.usplastic.com/knowledgebase/article.aspx?contentkey=784
No exact match found.