👉 The term "cylindrelloid" refers to a type of material that is commonly used in the construction and manufacturing industries as an alternative to traditional concrete. Cylindrelloids are made from a combination of recycled materials such as steel, plastic, and glass, which are then mixed together to create a dense and durable building material. The term "cylindrelloid" was first coined by a Canadian architect in the 1980s who used it to describe a