Ornamental domesticated varieties of the common carp (Cyprinus carpio), of Japan and eastern Asia with red-gold or white coloring.

(astronomy) Abbreviation of Kepler/K1/K2 object of interest.

plural of Koy

A surname.

Synonym of koi

The “common” Greek language that developed and flourished between 300 B.C.E. and 300 C.E. (the time of the Roman Empire), and from which Modern Greek descended. It was based on the Attic and Ionian dialects of Ancient Greek.

A lingua franca. / A regional language that becomes standard over time.

(physics) Normal matter, as opposed to antimatter.

plural of koine

A local dialect of a koine.