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Wiktionary
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sulphur pearl
English
Noun
sulphur
pearl
(
plural
sulphur pearls
)
a very large, but harmless,
bacterium
,
Thiomargarita namibiensis
, that grows as a string of white beads large enough to be visible to the
naked eye
in the coastal sediments of
Namibia
References
Woods Hole news release
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