ra·​men·​tum | \ rəˈmentəm\
plural ramenta\ -​tə \

Definition of ramentum

1 : something scraped off : a minute particle : shaving

2 [ New Latin, from Latin ]

a : any of the thin brownish often fringed or laciniate scales that are borne upon the leaves or young shoots of many ferns and that consist of a single layer of cells
b : the armor of a fossil cycad stump that suggests in appearance the ramenta of existing ferns

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History and Etymology for ramentum

Latin, from radere to scratch, scrape + -mentum -ment

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