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a thin plate or scale of anything, as a thin scale growing from the petals of certain flowers; or one of the thin plates or scales of which certain shells are composed.

Flat and thin; lamelliform; composed of lamellæ. -- Lam"el*lar*ly, adv.

Of or pertaining to lamella or to lamellæ; lamellar.

Composed of, or furnished with, thin plates or scales. See Illust. of Antennæ.

Formed of two plates, as the stigma of the Mimulus; also, having two elevated ridges, as in the lip of certain flowers.

Between lammellæ or laminæ; as, interlamellar spaces.

cite, or carbonate of lime, having a silvery-white, pearly luster, and a waving or curved lamellar structure.

A variety of albite, white and lamellar in structure.

An igneous rock of feldspathic composition, lamellar in structure, and clinking under the hammer. See Phonolite.

A hydrate of alumina, often occurring in white lamellar masses with brilliant pearly luster; -- so named on account of its decrepitating when heated before the blowpipe.

euphotide, and now generally used for a coarsely crystalline, igneous rock consisting of lamellar pyroxene (diallage) and labradorite, with sometimes chrysolite (olivine gabbro).

See Lamella.

Having lamellar gills; belonging to the Lamellibranchia. -- n.

Thin and flat; scalelike; lamellar.

Having a lamellate bill, as ducks and geese.

A group of birds embracing the Anseres and flamingoes, in which the bill is lamellate.

Lamellar separation in a crystallized mineral, due to some other cause than cleavage, as to the presence of twinning lamellæ.

A massive lamellar variety of pyroxene, of a dingy green color. [Written also sahlite.]

Like spar; foliated or lamellar; spathose. Spathic iron (Min.), siderite. See Siderite (a).