silastic: meaning, definition, pronunciation and examples

Very Low / Technical
UK/sɪˈlastɪk/US/səˈlæstɪk/

Technical / Medical / Industrial

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Quick answer

What does “silastic” mean?

A brand name for a type of silicone rubber, often used for medical implants and prosthetics.

Audio

Pronunciation

Definition

Meaning and Definition

A brand name for a type of silicone rubber, often used for medical implants and prosthetics.

Used informally to refer to any silicone-based elastomer or rubber-like material, especially in medical and industrial contexts.

Dialectal Variation

British vs American Usage

Differences

No significant differences in meaning or usage. It is a trademark used internationally in the same technical contexts.

Connotations

Neutral technical term. In both regions, it strongly connotes medical devices, prosthetics, and specialised sealing materials.

Frequency

Equally rare in general discourse in both regions. Its use is confined to professionals in relevant fields (medicine, engineering, chemistry).

Grammar

How to Use “silastic” in a Sentence

[material] made from/of Silastica [noun] constructed with Silasticto implant a Silastic [device]

Vocabulary

Collocations

strong
silastic sheetsilastic implantsilastic tubingsilastic rubbersilastic prosthesis
medium
made of silasticsilastic materialsilastic sealsilastic catheter
weak
medical silasticflexible silasticdurable silastic

Examples

Examples of “silastic” in a Sentence

verb

British English

  • The surgeon will silastic the joint space. (Highly rare/improvised)

American English

  • The engineer recommended silastic-ing the connector. (Highly rare/improvised)

adverb

British English

  • The layer was applied silastically. (Extremely rare/non-standard)

American English

  • The connector is sealed silastically. (Extremely rare/non-standard)

adjective

British English

  • The silastic sheath provides excellent insulation.
  • They used a silastic drainage tube.

American English

  • The Silastic implant has a 10-year warranty.
  • We need a Silastic seal for the housing.

Usage

Meaning in Context

Business

Used in supply chains for medical or industrial components, e.g., 'We source the Silastic for the ventilator seals.'

Academic

Found in materials science, biomedical engineering, and surgical literature, e.g., 'The study compared tissue response to Silastic and polyurethane implants.'

Everyday

Virtually never used. A patient might hear it from a surgeon, e.g., 'The joint spacer is made of a material called Silastic.'

Technical

The primary domain. Precise usage referring to the specific branded material with defined properties, e.g., 'Apply the Silastic sealant to the flange.'

Vocabulary

Synonyms of “silastic”

Strong

silicone rubber (as a material category)

Neutral

silicone rubbersilicone elastomermedical-grade silicone

Weak

flexible polymersynthetic rubber

Vocabulary

Antonyms of “silastic”

rigid plasticmetal alloyceramicnatural rubber (in specific technical contexts)

Watch out

Common Mistakes When Using “silastic”

  • Using it as a countable noun (e.g., 'a silastic' is wrong; use 'a Silastic implant').
  • Capitalisation: It is a trademark and should be capitalised 'Silastic', though common usage often lowercases it.
  • Over-generalising: Assuming it refers to all plastics or rubbers.

FAQ

Frequently Asked Questions

Silastic is a specific brand of silicone rubber. While all Silastic is silicone-based, not all silicone products are Silastic.

No, it is incorrect and imprecise. It refers specifically to a type of silicone elastomer, not to natural rubber or other synthetic rubbers like neoprene.

For most English learners, it is a very low-priority word. It is essential only if you work or study in specific technical, medical, or industrial fields where this material is specified.

In British English, it's /sɪˈlastɪk/ (sih-LAS-tik). In American English, it's /səˈlæstɪk/ (suh-LAS-tik). The stress is always on the second syllable.

A brand name for a type of silicone rubber, often used for medical implants and prosthetics.

Silastic is usually technical / medical / industrial in register.

Phrases

Idioms & Phrases

  • None. It is a technical trademark and does not feature in idiomatic expressions.

Learning

Memory Aids

Mnemonic

Think: 'SILicone elASTIC' = SILASTIC. It's the elastic, stretchy silicone used in medical things.

Conceptual Metaphor

MATERIAL FOR FUNCTION: The material (Silastic) is conceptually understood through its function (flexible, implantable, sealing).

Practice

Quiz

Fill in the gap
After the trauma, the reconstructive surgeon used a sheet to repair the facial bone defect.
Multiple Choice

In which field is the term 'Silastic' most precisely and commonly used?

Practise

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Five interactive tools to remember words, train your ear, and build vocabulary in real context — drawn from this dictionary.

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