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See more synonyms for lamina on Thesaurus.com
noun, plural lam·i·nae [lam-uh-nee] /ˈlæm əˌni/, lam·i·nas.
  1. a thin plate, scale, or layer.
  2. a layer or coat lying over another, as the plates of minerals or bones.
  3. Botany. the blade or expanded portion of a leaf.
  4. Geology. a layer of sediment or sedimentary rock only a small fraction of an inch (less than a centimeter) in thickness.
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Origin of lamina

From Latin, dating back to 1650–60; see origin at lame2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


Examples from the Web for lamina

Historical Examples

  • Laminiform: layer-like: having the appearance or made up of lamina.

    Explanation of Terms Used in Entomology

    John. B. Smith

  • The corolla (if it may be so called) a fleshy, 3-lobed lamina.

  • They may be called (in a generalized sense) the co-ordinates of the lamina.

  • Moreover the sections should be cut from the basal third of the lamina, and not from the tip of the leaf.


    H. Marshall Ward

  • It split easily into lamina as fine as paper; was peculiarly elastic.

British Dictionary definitions for lamina


noun plural -nae (-ˌniː) or -nas
  1. a thin plate or layer, esp of bone or mineral
  2. botany the flat blade of a leaf, petal, or thallus
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Derived Formslaminar or laminose (ˈlæmɪˌnəʊs, -ˌnəʊz), adjective

Word Origin

C17: New Latin, from Latin: thin plate
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

lamina in Medicine


n. pl. lam•i•nas
  1. A thin plate, sheet, or layer.
  2. A thin layer of bone, membrane, or other tissue.
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Related formslami•nar null adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

lamina in Science


Plural laminae (lămə-nē′) laminas
  1. The expanded area of a leaf or petal; a blade. See more at leaf.
  2. A thin layer of bone, membrane, or other tissue.
  3. The thinnest recognizable layer of sediment, differing from other layers in color, composition, or particle size. Laminae are usually less than 1 cm (0.39 inches) thick.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.