👉 Coscended is a term in the field of chemistry, specifically in organic synthesis, referring to the process of adding a molecule (such as an aldehyde or ketone) to another, typically through a catalytic step, which results in the formation of an alkyne. This type of reaction is also known as a "coscened" reaction and is often used in the production of synthetic organic compounds such as aldehydes, ketones, and alkenes.