Types of Bladder Cancer. The main types of bladder cancer are named for the type of cells that become cancerous. The most common is transitional cell carcinoma, which begins in the cells that line the inside of the bladder.Squamous cell carcinoma and adenocarcinoma are much less common.ypes of Bladder Cancer. The main types of bladder cancer are named for the type of cells that become cancerous. The most common is transitional cell carcinoma, which begins in the cells that line the inside of the bladder.
1. chemical compound - (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight. compound. chemical science, chemistry-the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions.
Letâs break this down: A chemical is any substance that can be defined by its atomic or molecular composition. That covers a lot of ground! Any element is a chemical, an element being any substance that can be defined by a single atom. Thus hydrogen (H) and oxygen (O) are chemicals. Any compound is also a chemical, a compound being any substance defined by two or more bonded atoms. Thus water (H2O), consisting of bonded hydrogen and oxygen, is a chemical.