Alternative form of catch some z's

(category theory) A category 𝒞 with a bifunctor ⊗:𝒞⨯𝒞→𝒞 which may be called tensor product, an associativity isomorphism 𝛼_(A,B,C):(A⊗B)⊗C≃A⊗(B⊗C), an object I which may be called tensor unit, a left unit natural isomorphism 𝜆_A:I⊗A≃A, a right unit natural isomorphism 𝜌_A:A⊗I≃A, and some "coherence conditions" (pentagon and triangle commutative diagrams for those isomorphisms).

A box attached to a lawnmower to collect the cut grass

One of 100 counties in North Carolina, United States. County seat: Newton.

present participle of catch on

(medicine, informal) Synonym of DiGeorge syndrome

(category theory) A category naturally associated to any monad T, and equivalent to the category of free T-algebras.

(idiomatic) To understand the meaning or implications of someone’s pronouncement.

(Singapore, Malaysia, colloquial) To fail to understand something; be unable to comprehend what others are saying.

(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.