constancy

英 ['kɒnst(ə)nsɪ] 美['kɑnstənsi]

• n. 坚定不移；恒久不变

1. the quality of being free from change or variation

2. the tendency for perceived objects to give rise to very similar perceptual experiences in spite of wide variations in the conditions of observation

3. faithfulness in personal attachment (especially sexual fidelity)