" lamella "

[Noun]  | "la*mel*la" | \ lə-ˈme-lə \

1: a thin flat scale, membrane, or layer: such as

2: one of the thin plates composing the gills of a bivalve mollusk

3: a gill of a mushroom

Origin: 1678 ;

 New Latin, from Latin, diminutive of lamina thin plate;

[Noun]  | "middle lamella" 

1: a layer of intercellular material lying between the walls of adjacent plant cells

Origin: circa 1886 ;

[Noun]  | "lamella"