We found several explanations and definitions for Stablecoins:
Stablecoins are a class of cryptocurrency that attempts to peg their market value to some external reference. Stablecoins may be pegged to a currency.
Stablecoins are digital assets sometimes referred to as coins, sometimes as tokens, that are desined to keep their value. That is, to experience only the kind of volatility seen in traditional currencies, which have price swings that are generally far smaller than of Bitcoin. (Fortune 10/08/21)
A Stablecoin is a class of cryptocurrencies that attempt to offer price stability and are backed by a reserve asset. (Investopedia)
Stablecoins are Ethereum tokens designed to stay at a fixed value, even when the price of ETH changes. (ethereum.org)
Learn more about finance terms at Investopedia