Definition of yolk sac in English:
1A membranous sac containing yolk attached to the embryos of reptiles and birds and the larvae of some fishes.
- The eggs take about 20 weeks to hatch and the now free-swimming ray is still reliant upon its yolk sac for a few more weeks before it begins to feed upon shrimps.
- Likewise, the occasional yolk sac tumor arising in liver has been reported in childhood.
- The neoplasm metastasized as the yolk sac component.
Definition of yolk sac in:
- British & World English dictionary
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.
Most popular in the US
Most popular in the UK
Most popular in Canada
Most popular in Australia
Most popular in Spain
Most popular in Malaysia
Most popular in India
Most popular in Pakistan