Plethra

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Plethron \Pleth"ron\, Plethrum \Pleth"rum\, n.; pl. {Plethra}.
     [NL., fr. Gr. ?.] (Gr. Antiq.)
     A long measure of 100 Greek, or 101 English, feet; also, a
     square measure of 10,000 Greek feet.
     [1913 Webster]