The word "protogaster" is spelled as [proʊtoʊɡæstər]. The first syllable "pro" sounds like "proh" as in "promote". The second syllable "to" sounds like "toh" as in "tomato". The third syllable "ga" sounds like "gah" as in "garden". The fourth syllable "ster" sounds like "stər" as in "rooster". "Protogaster" is a term used in zoology and refers to the larval stage of certain species of fish. Proper spelling can ensure accurate communication and understanding in scientific disciplines.
Prosogaster, foregut.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.