plural noun
Athi·​o·​rho·​da·​ce·​ae | \āˌthīəˌrōˈdāsēˌē\

Definition of Athiorhodaceae 

: a family of small motile sulfur bacteria having polar flagella and red to brown coloration due to various combinations of bacteriochlorophyll and carotenoid pigments

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History and Etymology for Athiorhodaceae

New Latin, from a- entry 2 + thi- + rhod- + -aceae

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having a pattern of small flowers

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