rubber

77 ENTRIES FOUND:

1rub·ber

noun \ˈrə-bər\

Definition of RUBBER

1
a :  one that rubs
b :  an instrument or object (as a rubber eraser) used in rubbing, polishing, scraping, or cleaning
c :  something that prevents rubbing or chafing
2
[from its use in erasers]
a :  an elastic substance that is obtained by coagulating the milky juice of any of various tropical plants (as of the genera Hevea and Ficus), is essentially a polymer of isoprene, and is prepared as sheets and then dried —called also caoutchouc, india rubber
b :  any of various synthetic rubberlike substances
c :  natural or synthetic rubber modified by chemical treatment to increase its useful properties (as toughness and resistance to wear) and used especially in tires, electrical insulation, and waterproof materials
3
:  something made of or resembling rubber: as
a :  a rubber overshoe
b (1) :  a rubber tire
(2) :  the set of tires on a vehicle
c :  a rectangular slab of white rubber in the middle of a baseball infield on which a pitcher stands while pitching
d :  condom 1
rubber adjective

First Known Use of RUBBER

1536

2rubber

noun

Definition of RUBBER

1
:  a contest consisting of an odd number of games won by the side that takes a majority (as two out of three)
2
:  an odd game played to determine the winner of a tie

Origin of RUBBER

origin unknown
First Known Use: 1599

rub·ber

noun \ˈrəb-ər\   (Medical Dictionary)

Medical Definition of RUBBER

1
: an elastic substance that is obtained by coagulating the milky juice of any of various tropical plants (as of the genera Hevea and Ficus), is essentially a polymer of isoprene, and is prepared as sheets and then dried—called also caoutchouc, india rubber
2
: condom 1

rubber

noun    (Concise Encyclopedia)

Flexible material that can recover its shape after considerable deformation.The best-known rubber is natural rubber, made from the milky latex of the rubber tree (Hevea brasiliensis). Natural rubber is still important industrially, but it now competes with synthetic alternatives (e.g., neoprene, silicone) derived from petroleum, natural gas, and other source materials. Rubber's usefulness is based on the unique elasticity of its constituent polymer molecules (built of thousands of isoprene monomers; see isoprenoid), which are capable of returning to their original coiled shape after being stretched to great extents; it is made more durable by vulcanization with sulfur or another agent that establishes chemical cross-links between the polymers. Fillers and other additives allow tailoring of properties to the desired use (e.g., by foaming, shaping, and curing). More than half of all rubber goes into making tires; the rest is used principally in belts, hoses, gaskets, shoes, clothing, furniture, and toys.

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