"LC" can refer to various concepts, but one common meaning is "Liquid Crystal." Liquid crystals are substances that exhibit properties between those of liquids and solid crystals. They are often used in displays, such as LCD screens, where they manipulate light to create images. Another meaning of "LC" is "Letter of Credit," a financial document used in international trade. It guarantees that a seller will receive payment from a buyer's bank, provided that certain conditions are met. This helps facilitate transactions and reduces the risk for both parties involved in the trade.