Emily Dickinson Lexicon

MEM-BRA'NE-OUS, or MEM'BRA-NOUS, a. [or MEM-BRA-NA'CEOUS.]

1. Belonging to a membrane; consisting of membranes; as,a membraneous covering. Birds of prey have membranaceous stomachs, not muscular. Arbuthnot.
2. In botany, a membranaceous leaf has no distinguishable pulp between the two surfaces. In general, it denotes flattened or resembling parchment. Martyn.