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@@ -80,7 +80,7 @@ There are two main types of automated market makers. One may be governed and set
 | ⚠️ | Beta coefficient (finance) | A measure of a stock's volatility in relation to the overall market. Simply, its a measure of how an asset moves on average when the overall stock market increase or decreases. |
 | 👷 | Beta (software) | software refers to computer software that is undergoing testing that hasn't been officially released. It's software in development between the alpha phase and the release phase. It's generally considered "complete" by the developer that is not ready for general use due to a lack of testing. |
 | 👷 | Bid price |  The price that a prospective buyer is prepared to pay for a securities or other asset. A bid price is generally arrived at through a process of negotiation between the seller and buyer. Prices are designed to a desirable outcome from the entity making the bid. When multiple buyers bid, it can develop into a bidding war; eventually, the price becomes settled when a buyer makes an offer which a rival is unwilling to top. In the context of stock trading, the bid price refers to the highest amount of money a prospective buyer is willing to spend on it.  |
-| ⚠️ | Bid-ask spread | TBD |
+| 👷 | Bid-ask spread | the difference between bid price and asking price for an investment, it represents the difference between the max amount a buyer is willing to pay and the minimum price the seller is willing to accept. |
 | ⚠️ | Bitcoin | An immutable and trustless ledger made up of a decentralized network of nodes to manage and issue a global digital currency that mimics gold's property of scarcity via a hard limit of 21 million coins. Explicitly it is used as a store of value by mimicking the properties of money. It is the first successful attempt at issuing decentralized currency, non-fiat, non-state actor currency which solves the double-spend problem.|
 | 👷 | Bitcoin core | Bitcoin Core consists of both “full-node” software for fully validating the blockchain as well as a bitcoin wallet. Bitcoin Core is programmed to decide which blockchain contains a valid transaction. Users of Bitcoin Core only accept transactions for that blockchain, making it the Bitcoin blockchain that everyone else to use. The open-source project maintains and releases Bitcoin client software called “Bitcoin Core”; which is the descendant of the original Bitcoin software client by Satoshi Nakamoto after publishing the Bitcoin whitepaper. |
 | ⚠️ | Bitcoin dominance | TBD |