Definition of pseudostoma
1 : a stigma in serous membrane filled by intercellular substance or otherwise closed
2 : the temporary mouth of a larval echinoderm
3 : the osculum of a sponge
pseudostomatous\¦südə¦stōmətəs, -täm-\ or
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Origin and Etymology of pseudostoma
New Latin, from pseud- + stoma
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