clostridium perfringens
— Noun
– English
～ anaerobic Gram-positive rod bacterium that produces epsilon toxin; can be used as a bioweapon
class period
— Noun
– English
～ a regularly scheduled session as part of a course of study
Carboniferous period
— Noun
– English
～ from 345 million to 280 million years ago
Cambrian period
— Noun
– English
～ from 544 million to about 500 million years ago; marine invertebrates
Cretaceous period
— Noun
– English
～ from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants
computer peripheral
— Noun
– English
～ electronic equipment external to the circuit board that contains the CPU of a computer; "disk drives and printers are important peripherals"
Cape periwinkle
— Noun
– English
～ commonly cultivated Old World woody herb having large pinkish to red flowers
Commodore Perry
— Noun
– English
～ United States commodore who led the fleet that defeated the British on Lake Erie during the War of 1812; brother of Matthew Calbraith Perry (1785-1819)
Campanula persicifolia
— Noun
– English
～ perennial European bellflower with racemose white or blue flowers