In heraldry, an increscent is a crescent moon with its horns turned toward the viewer’s left, or dexter from the shield-bearer’s perspective. Like the crescent generally, it can symbolize hope, growth, renewal, honor, and increasing fortune. Its shape suggests the waxing moon, so it may imply beginnings, promise, and rising strength. In Christian and medieval symbolism, the moon could also be associated with chastity, the Virgin Mary, changeability, and reflected divine light. As a heraldic charge, the increscent is simple, elegant, and highly recognizable, making it useful both as a main emblem and as a mark of difference.

Crescents have a long history in European, Islamic, and civic symbolism, so their meaning varies by context. In English heraldry, the crescent is also widely known as a cadency mark for a second son, although that use normally refers to a standard crescent rather than specifically an increscent or decrescent. In arms connected with crusading memory, Mediterranean identity, or encounters with the Islamic world, crescents may carry historical or military associations. In other cases, they are canting charges, astronomical symbols, or signs of prosperity and renewal. The direction of the horns matters in blazon: increscent faces dexter, decrescent faces sinister, and a crescent with horns upward is simply a crescent.

The increscent may appear alone, in groups, between stars, around crosses, or as part of a crest or badge. It is often used to create rhythm across a shield because its curved form contrasts beautifully with straight ordinaries. Useful explanations of the term can be found in Parker’s A Glossary of Terms Used in Heraldry, while examples of lunar charges are collected at Heraldry of the World. The Heraldry Society also offers broader educational context. In coats of arms, the increscent remains a graceful emblem of increase, aspiration, and heraldic distinction.