- 唯一性 wéiyīxìng uniquenessthe state or quality of being the only one of its kind
- 实践是检验真理的唯一标准 shíjiànshìjiǎnyànzhēnlǐdewéiyībiāozhǔn practice is the sole criterion for testing truthA political slogan from 1978, central to the reform period, stating that actual practice is the only way to determine if a theory is true.
