noun Botany.

an enlarged, aboveground portion of stem, present in many tropical orchids, in which moisture is stored.

Nearby words

  1. pseudoanemia,
  2. pseudoaneurysm,
  3. pseudoappendicitis,
  4. pseudoaquatic,
  5. pseudoarthrosis,
  6. pseudobulbar,
  7. pseudobulbar paralysis,
  8. pseudocarp,
  9. pseudocartilage,
  10. pseudocast

Origin of pseudobulb

First recorded in 1825–35; pseudo- + bulb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Science definitions for pseudobulb



A thickened, bulblike, fleshy stem located above the ground, as in many orchids. See also bulb corm.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.