Japanese to English Dictionary (和英辞典 / Waei Jiten)

Unsaturation

The state or condition of an organic chemical compound containing carbon-carbon double or triple bonds that can accept additional atoms.

Unspared

Not spared; not held back or withheld.

Unspeakable

Too awful or extreme to be expressed or described in words.

Unsupervised learning

A type of machine learning where the algorithm is trained on data without labeled responses.

Unsustainable Development

Development that does not meet the needs of the present without compromising the ability of future generations to meet their own needs.

Unsustainable Growth

Economic growth that cannot be maintained over the long term without causing severe environmental or social harm.

Unvarying

Not changing or capable of being changed; remaining constant and uniform over time.

Unwaveringly

In a manner that is steady, resolute, and without hesitation or wavering.

Unwholesomeness

The quality of being unhealthy or morally harmful.

Unyielding

Not giving way to pressure; hard or solid.

Upper-Pelagic-Zone

The upper layer of the pelagic zone in the ocean, typically extending from the surface to about 200 meters deep, where light is sufficient for photosynthesis.

Urban renewal

The redevelopment of areas within a large city, typically involving the clearance of slums and the construction of new buildings, businesses, and public amenities.