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Is MIOSIS a valid Scrabble word?

Yes, MIOSIS is a valid word in US Scrabble and UK Scrabble, worth 8 points.

Base score before bonus squares; blank tiles score zero.

What does MIOSIS mean?

  1. noun

    (genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants)

  2. noun

    reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller

Definitions from WordNet 3.1, Princeton University.

Points

8

Scrabble

9

Words With Friends

6

Letters

M (3) + I (1) + O (1) + S (1) + I (1) + S (1) = 8 points in Scrabble.

Dictionary status

  • Scrabble (US & Canada)Valid
  • Scrabble (UK & worldwide)Valid
  • Words With FriendsListed

Scrabble lists: NWL2023 (US & Canada) and CSW24 (UK & worldwide). WWF uses our ENABLE reference plus verified additions. “Listed” and “Not listed” describe that reference; check acceptance in the game. Sources reviewed 2026-10-03.

Hooks for MIOSIS

MIOSIS has no one-letter front or back hooks in US Scrabble. Adding a single letter to either end does not make another word in that list.

Front hooks0

None — nothing can be added to the front.

Back hooks0

None — nothing can be added to the end.

Words you can make from MIOSIS

The 24 highest-scoring words using these letters.

Study MIOSIS and related words

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