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Webster 1913 Edition

Adj.

[L.

membranaceus

Same as

Arbuthnot.

(Bot.)

Thin and rather soft or pliable, as the leaves of the rose, peach tree, and aspen poplar.

Adj.

Belonging to a membrane; consisting of membranes; as a membraneous covering.

Birds of prey have membranaceous stomachs, not muscular.

In botany, a membranaceous leaf has no distinguishable pulp between the two surfaces. In general, it denotes flatted or resembling parchment.