Ultratropical (a.)
definition: Situated beyond
Or outside of the tropics; extratropical; also having an excessively tropical temperature; warmer than the tropics.
Ultratropical is a 13 letter word that begins with a U and ends in an L

Ultrazodiacal (a.)
definition: Outside the zodiac; being in that part of the heavens that is more than eight degrees from the ecliptic; as
Ultrazodiacal planets that is those planets which in part of their orbits go beyond the zodiac.
Ultrazodiacal is a 13 letter word that begins with a U and ends in an L

Umbelliferone (n.)
definition: A tasteless white crystalline substance
C9H6O3 found in the bark of a certain plant (Daphne Mezereum) and also obtained by the distillation of certain gums from the Umbelliferae as galbanum asafetida etc. It is analogous to coumarin. Called also hydroxy-coumarin.
Umbelliferone is a 13 letter word that begins with a U and ends in an E

Umbelliferous (a.)
definition: Of or pertaining to a natural order (Umbelliferae) of plants
Of which the parsley carrot parsnip and fennel are well-known examples.
Umbelliferous is a 13 letter word that begins with a U and ends in an S

Umbelliferous (a.)
definition: Producing umbels.

Umbelliferous is a 13 letter word that begins with a U and ends in an S

Umbraculiform (a.)
definition: Having the form of anything that serves to shade
As a tree top an umbrella and the like; specifically (Bot.) having the form of an umbrella; umbrella-shaped.
Umbraculiform is a 13 letter word that begins with a U and ends in an M

Unaccountable (a.)
definition: Not accountable or responsible; free from control.

Unaccountable is a 13 letter word that begins with a U and ends in an E

Unaccountable (a.)
definition: Not to be accounted for; inexplicable; not consonant with reason or rule; strange; mysterious.

Unaccountable is a 13 letter word that begins with a U and ends in an E

Unadulterated (a.)
definition: Not adulterated; pure.

Unadulterated is a 13 letter word that begins with a U and ends in a D

Unappropriate (a.)
definition: Inappropriate; unsuitable.

Unappropriate is a 13 letter word that begins with a U and ends in an E

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