U+25E1 "◡" Lower Half Circle Unicode Character

U+25E1 "◡" Lower Half Circle is a geometric symbol depicting an open arc that forms the lower half of a circle, rendering as a semicircular shape with its flat side facing upward. It belongs to the Geometric Shapes block of Unicode and is often used in technical diagrams, phonetic transcriptions, or decorative text to represent a downturned curve, a concave form, or a partial outline that suggests containment or a sunken area. Its design can vary across different fonts, but it consistently functions as a simple, uncluttered visual element for indicating a missing upper half or an inverted arch.