lamina
UK[ˈlæm.ɪ.nə]US[ˈlæm.ə.nə]
n
A thin layer, plate, or scale of material, especially in biological tissue or rock.
n
The flat, expanded part of a leaf; the blade.
Morpheme Breakdown
lamin
a
lamin
thin plate
a
noun suffix
Etymology
The word 'lamina' entered English directly from Latin in the mid-17th century, retaining its original spelling and core meaning. The Latin lamina itself is of uncertain origin, though it may be related to words implying a thin slice or peel. In scientific and technical English, 'lamina' precisely denotes a thin sheet-like structure, whether in anatomy (e.g., the lamina of a vertebra), botany (the blade of a leaf), or geology (a fine layer of rock). Its journey is one of specialized adoption, moving from a general Latin term into a precise descriptor in modern scientific vocabulary.
Analysis
Structure: lamin (thin plate) + a (noun suffix)
'lamin' originates from Latin lamina, meaning a thin sheet, plate, or layer. The final '-a' is a Latin noun ending adopted into English.
Examples
The biopsy revealed a thinning of the basement membrane lamina.
The fossil was preserved in a fine lamina of shale.
The leaf's lamina was broad and captured sunlight efficiently.