crested thick-billed North American finch having bright red plumage in the male | the 3rd letter of the Roman alphabet |
a variable color averaging a vivid red | the speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 299,792,458 meters per second |
(Roman Catholic Church) one of a group of more than 100 prominent bishops in the Sacred College who advise the Pope and elect new Popes | |
the number of elements in a mathematical set; denotes a quantity but not the order | |