A belief system based heavily on Darwinism and evolutionism. Believers in it see Charles Darwin's work as vital, even all-encompassing, and usually see atheism as an implication of evolution.

A believer in ultra-Darwinism.

(Scotland, law) The process whereby the estate of a deceased person with no will or traceable blood relatives goes to the Crown.

(aviation) A type of airline that tries to keep ticket prices as low as possible, by charging for everything, such as checked-in baggage, carry-on baggage, food, beverages, assigned seat numbers, etc.

(physics) A fault in classical physics, from the Rayleigh's Law/Rayleigh-Jeans Law outcomes at short wavelengths/high frequencies, that causes infinite amplification of shorter wavelength/higher frequency radiation inside a cavity, due to the application of equipartition theorem on black body radiation within a cavity.

Alternative letter-case form of ultima Thule (“a place beyond the known world; highest achievement”)

(astronomy, informal) Synonym of Arrokoth (“trans-Neptunian object (486958) 2014 MU69”)

A town in Victoria, Australia.

The larger lobe of the trans-Neptunian object Ultima Thule, a contact binary object.

Synonym of Baroque (“chess variant”)