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noun
Any of a large and distinctive group of ciliate protozoa, of the class Spirotrichea, typically with prominent oral cilia in the form of a series of polykinetids, called the adoral zone of membranelles, beginning anterior to the oral cavity and running down to the left side of the mouth.
Definition source: English Wiktionary via Wiktextract
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Synonyms: none provided
Antonyms: none provided
History
Etymology tree Proto-Indo-European *sper- Proto-Indo-European *sper-yeh2- Ancient Greek σπεῖρα (speîra)der. Latin spīra Ancient Greek -ο- (-o-)der. Latin -o-bor. English -o- English spiro- English trich English spirotrich From spiro- + trich.
