ul·tra·light 
(ŭl′trə-līt, ŭltrə-līt′)
(ŭl′trə-līt, ŭltrə-līt′)n.
Any of various very light recreational aircraft having a single seat or two seats, a very small engine, and usually a fixed wing. Early ultralights were essentially motorized hang gliders.
adj.
1. Very light.
2. Relating to or being an ultralight.
ultralight- hydration
- hydrator
- hydraulic
- hydraulically
- hydraulic fracturing
- hydraulic press
- hydraulic ram
- hydraulics
- hydrazide
- hydrazine
- hydria
- hydric
- hydride
- hydrilla
- hydriodic acid
- hydro
- hydro-
- hydrobiological
- hydrobiologist
- hydrobiology
- hydrobromic acid
- hydrobromide
- hydrocarbon
- hydrocarbonaceous
- hydrocarbonic