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acanthology

noun
ac·​an·​thol·​o·​gy | \ˌaˌkanˈthäləjē, ˌakən-\
plural -es

Definition of acanthology 

: the study of spines (as of sea urchins) especially as an adjunct of taxonomy

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First Known Use of acanthology

1879, in the meaning defined above

History and Etymology for acanthology

acanth- + -logy

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The first known use of acanthology was in 1879

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