acid - alde
- age determination
- age distribution
- age factor
- age hardening
- age involution
- age resistor
- age structure
- age variability
- age variation
- age-grade
- age-involution phenomenon
- age-involution weight curve
- age-restricted antigen
- age-specific death rate
- aged strength
- ageing apparatus
- ageing conditions
- ageing hardness
- ageing temperature
- ageing treatment
