Sín

See also: Appendix:Variations of "sin"

Irish

From Late Latin Sīnae (“the southern Chinese”), from Ptolemy's Ancient Greek Σῖναι (Sînai, “the Chinese”), of uncertain etymology but probably from Sanskrit चीन (Cīna, “China”), possibly via Arabic صِين (Ṣīn, “China; the Chinese”) and usually held to derive from Old Chinese 秦 (*zin, “Qin”).

An tSín f (genitive na Síne)

China (a cultural region and civilization in East Asia, occupying the region around the Yellow, Yangtze, and Pearl Rivers, taken as a whole under its various dynasties)
China (a large country in East Asia, occupying the region around the Yellow, Yangtze, and Pearl Rivers; the People's Republic of China, since 1949)

Declension of Sín (second declension, no plural)

forms with the definite article
	singular
nominative	an tSín
genitive	na Síne
dative	leis an tSín don tSín

Mutated forms of *Sín*
radical	lenition	eclipsis
Sín	Shín after an, tSín	not applicable

Note: Certain mutated forms of some words can never occur in standard Modern Irish.
All possible mutated forms are displayed for convenience.