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Webster 1913 Edition

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(pē̍-kŏp′tē̍-rĭs)

rop.

Noun.

[NL., fr. Gr.

πέκειν

to comb +

πετρίσ

a kind of fern.]

(Paleon.)

An extensive genus of fossil ferns; – so named from the regular comblike arrangement of the leaflets.