| HYD | sooty black petrel with white markings |
|---|---|
| HYD | storm petrels |
| HYD | an aqueous solution of hydrogen bromide that is a strong liquid acid |
| HYD | an organic compound containing only carbon and hydrogen |
| HYD | disorder in which serous fluid accumulates in a body sac (especially in the scrotum) |
| HYD | relating to or characterized by or evidencing hydrocephalus |
| HYD | an abnormal condition in which cerebrospinal fluid collects in the ventricles of the brain |
| HYD | an abnormal condition in which cerebrospinal fluid collects in the ventricles of the brain |
| HYD | simple nearly stemless freshwater aquatic plants |
| HYD | frogbit |
| HYD | European floating plant with roundish heart-shaped leaves and white flowers |
| HYD | simple nearly stemless freshwater aquatic plants |