| hottonia | (n) aquatic herbs, Syn. genus Hottonia |
| water gillyflower | (n) a featherfoil of the eastern United States with submerged spongy inflated flower stalks and white flowers, Syn. Hottonia inflata, American featherfoil |
| water violet | (n) featherfoil of Europe and western Asia having submerged and floating leaves and violet flowers, Syn. Hottonia palustris |
| Hottonia | n. A genus of aquatic herbs. |