The superlative form of 'tiny'; extremely small, the smallest possible size.
From 'tiny,' which likely derives from Old English 'tyne' or similar, or possibly from 'teen' (as in 'teeny'). The superlative 'tiniest' follows English patterns of adding '-est' to adjectives.
The tiniest creatures on Earth are tardigrades (water bears), which can survive being frozen, boiled, or exposed to radiation—basically indestructible microscopic tanks!
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