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

• black cherry tree
• black cohosh
• black comedy
• black cottonwood
• black crappie
• black currant
• black cypress pine
• Black Death
• black diamond
• black disease
• black duck
• black economy
• black elder
• black elderberry
• Black English
• Black English Vernacular
• black eye
• black felt cup
• black flag
• Black Forest
• Black Forest gateau
• black fox
• black fritillary
• black gold
• black grama