1. The age of an embryo counting from the time of fertilization
   - fetal age, fertilization age, gestational age, fertilisation age [Brit]

Derived forms: foetal ages

Type of: age

• putterer
• putting
• putting green
• putting iron
• putting surface
• putting to death
• putto
• putty
• putty knife
• puttyroot
• putz
• puzzle
• puzzle out
• puzzle over
• puzzled
• puzzlement
• puzzler
• puzzling
• PVA
• PVC
• PVS
• PWR
• PX
• pya
• pyaemia