What does laminae mean?
Laminae is the traditional Latin plural of lamina and normally denotes thin, flat layers or plates of material. It appears across several fields: anatomy uses it for structures such as the bony plates at the rear of a vertebra; botany uses it for the expanded blade of a leaf; and materials science describes the thin layers from which laminated products are built. The plural ending -ae is retained because the word has long belonged to technical and scientific English, although laminas is also accepted in general use. In formal writing, laminae is especially associated with detailed anatomical or structural description. The word is useful both as precise vocabulary for layered material and as an example of how Latin morphology survives in modern English.
plural nounThe traditional plural of lamina, denoting thin, flat layers, sheets, or plates of material. In anatomy and botany, it is used respectively for structural layers or bony plates and for the expanded blades of leaves.
- Thin, flat layers, sheets, or plates of material.
- Anatomical layers or the paired bony plates forming the posterior portion of a vertebra.
- The expanded, usually flat blade of a leaf in botanical usage.
"The vertebral laminae form the posterior part of the arch that encloses the spinal canal."
"The laminated panel consists of thin laminae bonded together under pressure."
"She examined the delicate laminae of the leaves under the microscope."
Laminae is the traditional plural of lamina. The singular lamina is common in technical descriptions of an individual layer, plate, or leaf blade.
"Several thin laminae of bone surround the opening in the skull."
Paired bony laminae help form the protective arch of every vertebra around the spinal canal.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does laminae come from?
Laminae is the Latin plural of lamina, a word denoting a thin sheet, plate, or layer. Lamina entered English in the late 16th century in learned and scientific contexts, with its Latin plural established alongside the singular. Related forms include the Latin-derived lamella, meaning a small thin plate, and English derivatives such as laminate and lamination.
Related word forms
How laminae is actually used
This is chiefly formal and technical vocabulary used in anatomy, botany, palaeontology, wood science, and materials science. The singular lamina is often retained in anatomy when one layer or plate is being described, while laminae is the conventional plural in plural constructions.
Easily confused with laminae
Laminae is the plural of lamina and can refer to layers generally, whereas lamellae is the plural of lamella and usually denotes very thin biological or microscopic layers.