Word.ws English Dictionary

oobleck

/ˈuː.blɛk/

oobleck noun: a mixture of cornstarch and water with unusual physical properties.

oobleck: a mixture of cornstarch and water with unusual physical properties
Image: Daniel Christensen, CC BY 3.0, via Wikimedia Commons

Noun

oobleck (usually uncountable, plural ooblecks)

  1. (usually) A mixture of cornstarch and water with unusual physical properties.
    • How many people found that the oobleck was different from the flour?1995, Nancy Lee Cecil, The Art of Inquiry: Questioning Strategies for K-6 Classrooms
    • Pour the oobleck into a water table or into plastic tubs to place on tables.1998, Kathy Charner, The Giant Encyclopedia of Science Activities for Children 3 to 6

Forms of oobleck

pluralooblecks

Origin of oobleck

Named for a sticky substance in Bartholomew and the Oobleck (1949), children's story by Dr. Seuss.

Questions about oobleck

What does oobleck mean?
Oobleck means a mixture of cornstarch and water with unusual physical properties.
What part of speech is oobleck?
Oobleck is a noun.
How do you pronounce oobleck?
Oobleck is pronounced /ˈuː.blɛk/.
What is the plural of oobleck?
The plural of oobleck is ooblecks.

Words near oobleck in the dictionary

  1. oobit
  2. oobits
  3. ooblast
  4. ooblastic
  5. ooblasts
  6. oobleck
  7. ooblecks
  8. OOC
  9. ooch
  10. ooched
  11. ooches

Source and license

Adapted from Wiktionary: oobleck (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vealhurl-oobleck.wav.

Cite this entry: “oobleck.” Word.ws, https://word.ws/oobleck. Based on Wiktionary, CC BY-SA 4.0.