purlin

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pur·lin

also pur·line  (pûr′lĭn)
n.
One of several horizontal timbers supporting the rafters of a roof.

[Middle English.]

purlin

(ˈpɜːlɪn) or

purline

n
(Building) a horizontal beam that provides intermediate support for the common rafters of a roof construction
[C15: of uncertain origin]

pur•lin

(ˈpɜr lɪn)

also pur•line

(-laɪn)

n.
a longitudinal member in a roof frame, usu. for supporting rafters or the like between the plate and the ridge.
[1400–50; late Middle English purlyn, purloyne]
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References in periodicals archive ?
Tansigmoid and Purline activation function were selected for both hidden and output layer of CFBP model.
00 m, purline rests (conifer j / s, class II) 5/12 l = 6.