Having the form or appearance of a stream or river; resembling flowing water in structure or pattern.
Combines Latin 'flustrum' (stream) with Greek '-oid' (resembling, having the form of). The suffix became productive in scientific terminology during the 18th century.
The '-oid' suffix is everywhere in science (asteroid, humanoid, android)—it's how scientists lazily but effectively say 'kinda like this thing' without inventing entirely new words.
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