| 释义 |
{{wiktionary|umbo}} Umbo may refer to: - Umbo (bivalve), part of a bivalve shell which was formed when the animal was a juvenile
- Umbo (eye), tiny depression in the center of the foveola corresponding to foveal reflex
- Umbo of tympanic membrane, the central, most inverted portion of the ear drum
- Umbo (mycology), at the top of some mushrooms
- Otto Umbehr (1902–1980), German photographer known as "Umbo"
- A shield boss, a round, convex, or conical piece of material at the center of a shield
- The first year's growth of a seed scale on a Pinus cone, showing up as a protuberance at the end of the two-year-old scale
{{disambiguation}} |