Resembling agar or having qualities similar to agar gel.
From 'agar' (a gelatinous substance from seaweed) plus '-oid' (resembling). Agar itself comes from Malay/Javanese 'agar-agar,' the seaweed extract.
Scientists chose the term 'agaroid' to describe substances that behave like agar—jiggly, gel-like, stable—which is brilliant because it lets them categorize materials by function rather than origin.
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