from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A system for transliterating Chinese ideograms into the Roman alphabet, officially adopted by the People's Republic of China in 1979.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. A system of romanization (phonetic notation and transliteration to roman script) for Mandarin Chinese based on the Mandarin dialect of the Beijing area used in the People’s Republic of China.
- proper n. A Niger-Congo language of Cameroon.
Chinese (Mandarin) pīn yīn, to combine sounds into syllables : pīn, to combine + yīn, sound.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Chinese Mandarin 拼音 (pīnyīn) (Wiktionary)