1. (noun) the quality of being enduring and free from change or variation

• stability

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

• perceptual constancy

1. (noun) the quality of being enduring and free from change or variation

• invariance
• metastability
• monotony

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

• brightness constancy
• color constancy
• colour constancy
• shape constancy
• size constancy

1. (noun) the quality of being enduring and free from change or variation

• changelessness
• unchangeability
• unchangeableness
• unchangingness

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

• perception

3. (noun) faithfulness and dependability in personal attachments (especially sexual fidelity)

• faithfulness
• fidelity

1. (noun) (psychology) the tendency for perceived objects to give rise to very similar perceptual experiences in spite of wide variations in the conditions of observation

• psychological science
• psychology

1. (noun) the quality of being enduring and free from change or variation

• changefulness
• inconstancy

1. (noun) the quality of being enduring and free from change or variation

• changeless
• constant
• invariant
• unvarying
• stable
• static
• unchanging
• stable

2. (noun) faithfulness and dependability in personal attachments (especially sexual fidelity)

• constant