The story
- Ancient Greekβλᾰστᾰ́νω (blăstắnō)
- Ancient Greekβλαστός (blastós)
- Englishblasto-
- Englishpore
- Englishblastopore
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- English todayblastoporal
From blastopore + -al.
Etymology from Wiktionary, CC BY-SA 4.0.