autophagosome

noun
au·to·phago·some | \ˌȯ-tō-ˈfag-ə-ˌsōm \

Medical Definition of autophagosome 

: a double membrane-bound vesicle that encloses cellular constituents and fuses with lysosomes which digest these cellular constituents during autophagy The autophagosome does not bud off from preexisting organelles but, rather, is formed by a dynamic process of membrane expansion.— Daniel J. Klionsky, The New England Journal of Medicine, 23 Apr. 2009 During autophagy, a portion of cytoplasm is sequestered into an autophagosome: this then fuses with the lysosome, and the cytoplasm-derived materials are degraded.— Satoshi Tsukamoto et al., Science, 4 July 2008

Learn More about autophagosome

Share autophagosome

Comments on autophagosome

What made you want to look up autophagosome? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to reject or criticize sharply

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!