[adj. uhl-truh-lahyt, uhl-truh-lahyt; n. uhl-truh-lahyt]
extremely lightweight in comparison with others of its kind: a car with an ultralight engine.
something that is ultralight.
a small, light, inexpensive single-seat airplane that is essentially a motorized hang glider.

1970–75; ultra- + light2

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Example sentences
In fact, the cameras were in ultralight aircraft, which the birds
  accompanied-by choice.
The market for tiny ultralight cars with expensive drive trains in the name of
  squeezing out a few extra mpg is not that large.
Ultralight video cameras fastened to the tail feathers of crows have shown the
  birds to be versatile tool-users in the wild.
Ultralight in-molded climbing helmet with excellent ventilation for long and
  demanding uses.
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