A taxonomic term referring to the zooid forms or individual animals that make up ascidian colonies.
From Latin 'ascidium' (sac) plus Greek 'zoon' (animal) plus '-a' (plural), meaning 'ascidian animals.'
In colonial sea squirts, each 'zooid' is like an individual that's lost complete independence—they share the same water intake and food, making them more like a superorganism than separate creatures!
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