WordReference Random House Unabridged Dictionary of American English © 2025
ul•tra•light
(adj. ul′trə līt′, ul′trə līt′;n. ul′trə līt′),USA pronunciation adj.
n.
- extremely lightweight in comparison with others of its kind:a car with an ultralight engine.
n.
- something that is ultralight.
- a small, light, inexpensive single-seat airplane that is essentially a motorized hang glider.
- ultra- + light2 1970–75
'ultralight' also found in these entries (note: many are not synonyms or translations):