silicone
B2Pronunciation
UK
- /sˈɪlɪkˌəʊn/
US
- /ˈsɪləˌkoʊn/
Description
- Synthetic material
- Heat-resistant & flexible
- Waterproof sealant
- Used in medical products
- Soft, durable compound
Silicone isn't just one thing—it's a family of synthetic materials that can be shaped for many different jobs. Think about a flexible baking mold, a waterproof seal around a sink or window, or even some medical products. All these can be made with silicone. It is known for being heat-resistant, flexible, and water-resistant, which is why it is used in everything from kitchen tools to electronics and personal care products.
The story of silicone begins in the early 20th century, when scientists were looking for alternatives to natural rubber. They found a material that could handle heat, moisture, and wear very well. Today, you'll find it in sealants used around windows and tubs, in soft molds and kitchen tools, and even in some cosmetics. It changes its form to fit the job, which is a big part of why it is so useful.
Silicone is a synthetic polymer made up of silicon (a naturally occurring element found in sand!) combined with oxygen, carbon, hydrogen, and other elements. Unlike many plastics derived from oil, silicone boasts unique properties like exceptional temperature resistance—it can withstand both extreme heat and cold without breaking down. It's also incredibly flexible, durable, waterproof, chemically inert (meaning it doesn't react easily with other substances), and electrically insulating.
This remarkable combination of characteristics makes silicone a surprisingly common material. In the kitchen, you find it in spatulas, baking molds, and food storage containers because it's flexible and heat-resistant. In medicine, it's used for implants, tubing, and prosthetics due to its biocompatibility (meaning it doesn't usually harm living tissue). The tech world relies on silicone for sealants that protect electronics from moisture, for flexible keypads and buttons, and for protective coatings on sensitive components.
You might also encounter silicone in beauty products like lotions, conditioners, and primers—where it provides a smooth texture and helps spread the product evenly. It's even used in caulking around windows and doors to create waterproof seals!
So, while you may not always see silicone, this versatile material is quietly working behind the scenes in countless products we use every day, making our lives easier, safer, and more comfortable. It's a testament to human ingenuity—turning humble sand into something truly extraordinary.
Examples
- 1
Phone accessory
The phone case is made of soft silicone, so it doesn't slip out of my hand.
- 2
Sealing leaks
We put some silicone around the edge of the sink to stop the water from leaking.
Pattern
put silicone around + edge/joint
use it as a sealing material
- 3
Baking
She uses a silicone baking mat instead of baking paper.
- 4
Medical implants
The doctor explained the risks and benefits of silicone implants.
Forms and spellings
2 forms open this card.
Main spelling
- siliconenoun
Forms
- siliconespluralnoun