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Glite Dictionary
hard rubber

hard rubber

1 4.6
A very hard material made from tree sap and heated to become stiff, used for pen barrels or handles
  • noun
  • /hɑrd ˈrʌbər/
  • Specialized
translation icon : goma dura
  • The toy was designed with hard rubber to ensure it could withstand rough play and last longer.
  • use hard rubber

It's a this is a hard rubber spear tip.

Examples

  • In addition, there were sparkles on the handle of the knife, which was hard rubber and too coarse for prints.

    Fiction book (1990)

  • Bare feet on hard rubber bicycle pedals could take her anywhere, and she would ride no-hands, indifferent to a fall.

    Fiction book (1993)

  • Then you take a piece of hard rubber and you rub that on something else.

  • I'm not set up to mold hard rubber.

    Burn After Reading (2008)

  • It's a this is a hard rubber spear tip.

    Adam Savage’s Tested

  • The electrical insulator was made of hard rubber to withstand high voltages without breaking.

  • The flooring in the gym was made of hard rubber, providing better durability for heavy equipment.

Synonyms

ebonite
vshard rubber
  • Specialized
9.9

A hard black rubber that is treated with sulfur and used for electrical insulation and pens

is the general nonresilient form not specified by high sulfur content
vulcanite
vshard rubber
  • Archaic
9.9

A hard kind of rubber used to make false teeth and combs

is mainly used for electrical insulation rather than dental applications

How Hard

hard rubber
  • Specialized
1 4.6
rubber
230 1.0

Surface Forms

hard rubber singular
hard rubbers plural

Morphology

hard + rubber

This is a straightforward adjective + noun composition: 'hard' modifies 'rubber' to indicate a firm, less elastic type of rubber. A B1 learner who knows both words can infer it refers to a firm form of rubber, and the construction is cross-linguistically common and non-idiomatic.

Etymology

Hard rubber combines hard and rubber: the name came when people treated sticky rubber so it became hard and tough and could be used for pen barrels, radio cases, and tool handles. So hard rubber means rubber made 'not stretchy' and strong, used for lasting, durable parts.