tonoplast

[ ton-uh-plast, toh-nuh- ]
/ ˈtɒn əˌplæst, ˈtoʊ nə- /

noun Botany.

a membrane separating a vacuole from the surrounding cytoplasm in a plant cell.

Nearby words

  1. tonofilament,
  2. tonograph,
  3. tonography,
  4. tonometer,
  5. tonometric,
  6. tonotopic,
  7. tonotropic,
  8. tons,
  9. tonsil,
  10. tonsilla

Origin of tonoplast

First recorded in 1885–90; tono- + -plast

Also called vacuolar membrane.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


British Dictionary definitions for tonoplast

tonoplast

/ (ˈtəʊnəˌplæst) /

noun

botany the membrane enclosing a vacuole in a plant cell

Word Origin for tonoplast

C20: from Greek tonos tone + -plast

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

Medicine definitions for tonoplast

tonoplast

[ tōnə-plăst′ ]

n.

An intracellular structure or vacuole.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.