agrostology

noun
ag·​ros·​tol·​o·​gy | \ˌa-grə-ˈstä-lə-jē, ˌa-ˌgrä-, ə-ˌgrä-\
plural -es

Definition of agrostology 

: the branch of systematic botany that deals with the grasses

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First Known Use of agrostology

1820, in the meaning defined above

History and Etymology for agrostology

Greek agrōstis + English -o- + -logy

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The first known use of agrostology was in 1820

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