Resembling or having characteristics similar to an ascidia; ascidian-like in appearance or structure.
From Latin 'ascidium' (sac) plus '-oid' (resembling), meaning 'resembling an ascidian.'
The suffix '-oid' is a scientist's way of saying 'sort of looks like but isn't exactly'—so ascidioid things might be structures that evolved the same sac-shape or just happen to look similar!
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