Ovolo

[3]: 116 The description of ovolo as the fundamental convex quarter-round element underlying or being combined with other elements to compose molding, details on column capitals, and other architectural ornamentation remains in common use, as evidenced by the description by Lewis and Darley (1986) of the ovolo as a "[c]onvex moulding... usually a quarter of a circle in section", which also notes that it is "often enriched with egg and dart or similar ornament".

[5][better source needed] The fundamental element of ornamental, architectural molding that is concave (rather than convex like the ovolo) is found in cavetto or hollow chamfering moldings, which also usually presents a quarter-round cross-section, albeit concave.

[3]: 73  Ovolo and cavetto elements can be combined to form compound moldings; most simply, with the convex ovolo molding below the cavetto, it is known as cyma recta (for its wave-like cross-section), a type of common edge profile commonly referred to as ogee.

[3]: 97  The compound molding with the concave cavetto below and the convex ovolo above is termed cyma reversa.

[3]: 97  In modern residential applications, the ovolo profile is often used as the inside edge of stile and rail interior and cabinet doors.