ultralow

As a noun terms

is .

As an adjective ultralow is

extremely low.

As adjectives the difference between ultraslow and ultralow

is that ultraslow is extremely slow; of utmost sluggishness while ultralow is extremely low.

As adjectives the difference between low and ultralow

is that low is in a position comparatively close to the ground while ultralow is extremely low.

As a noun low

is something that is low; a low point or low can be (countable|uk|scotland|dialect) a flame; fire; blaze or low can be , mound, tumulus.

As an adverb low

is close to the ground.

As a verb low

is (obsolete|transitive) to depress; to lower or low can be or low can be to moo or low can be (uk|scotland|dialect) to burn; to blaze.