(creationism, pseudoscience) The discredited theory that the speed of light has decreased over time, proposed by creationists in order to support the belief that the universe is a few thousand years old even though there are objects visible today that are billions of light years away (whereas a constant speed of light would indicate that the universe is billions of years old and so contradict this belief).

The L-enantiomer of ascorbic acid, a water-soluble nutrient essential for life, synthesized by most animals and plants but not humans, although used in our bodies for many purposes. It is plentiful in citrus fruits and many vegetables, and a deficiency causes scurvy.

Abbreviation of care of. / Initialism of certificate of origin, a document used for shipping purposes. Describes country of origin of a given product.

Abbreviation of wheelchair. / Abbreviation of week commencing (followed by a date)

Abbreviation of backward compatibility.

Abbreviation of because.

Abbreviation of hepatitis C.

Abbreviation of dilation and curettage.

(management) The group of officers of a business organization who have the word "chief" in their titles. / (management) Senior headquarters executives.

Alternative spelling of C-sharp