(physics) A light-like boundary of the domain of validity of a Cauchy problem. One side of the horizon contains closed space-like geodesics and the other side contains closed time-like geodesics.

Of or pertaining to Caucasian Albania.

A native or inhabitant of Caucasian Albania. Udi people are descended from them. / The extinct Northeast Caucasian language once spoken by these people, and from which Udi is descended.

plural of Caucasian Albanian

(motor racing) A caution (“yellow flag”) flown during a race to separate a race into different stages. During the yellow period, standard caution flag rules apply.

(historical, uncommon, see usage note) battle of encirclement

plural of cauldron battle

simple past tense and past participle of catch a crab

caution used to justify preemptive measures that are likely not strictly necessary (often as "out of an abundance of caution")

A rock formation on the coast of County Antrim, Northern Ireland.