nounpl. -·nae· or -·nas
- a thin flake, scale, or layer, as of metal or animal tissue
- the flat, expanded part of a leaf; blade, as distinguished from the petiole
Origin of laminaL, thin piece of metal or wood from uncertain or unknown; perhaps Indo-European an unverified form (s)tlamen, a spreading out from base an unverified form stel-, to spread
nounpl. lam·i·nae, or lam·i·nas
- A thin plate, sheet, or layer.
- Botany a. The expanded area of a leaf or petal; a blade.b. The bladelike part of a kelp.
- A thin layer of bone, membrane, or other tissue.
- Zoology A thin scalelike or platelike structure, as one of the thin layers of sensitive vascular tissue in the hoof of a horse.
- Cytology A thin layer inside the nuclear membrane of a cell that is composed of a meshlike network of protein fibers.
- Geology A narrow bed of rock.
Origin of laminaLatin lāmina
- lam′i·nar lam′i·nal
(plural laminas or laminae)
From Latin lāmina (“thin sheet of material”)