[ muh-duhl-uh ]
See synonyms for medulla on
noun,plural me·dul·las, me·dul·lae [muh-duhl-ee]. /məˈdʌl i/.
  1. Anatomy.

    • the marrow of the bones.

    • the soft, marrowlike center of an organ, as the kidney or adrenal gland.

  2. Botany. the pith of plants.

Origin of medulla

1635–45; <Latin: marrow, pith

Words Nearby medulla Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use medulla in a sentence

British Dictionary definitions for medulla


/ (mɪˈdʌlə) /

nounplural -las or -lae (-liː)
  1. anatomy

  2. botany another name for pith (def. 4)

Origin of medulla

C17: from Latin: marrow, pith, probably from medius middle

Derived forms of medulla

  • medullary or medullar, adjective

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

Scientific definitions for medulla


[ mĭ-dŭlə, mĭ-dōō ]

Plural medullas medullae (mĭ-dŭlē)
  1. The central portion of an anatomical structure, such as the adrenal gland or the kidney.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.