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Is RETINOBLASTOMA a valid Scrabble word?

Yes, RETINOBLASTOMA is a valid word in US Scrabble and UK Scrabble, worth 18 points.

Base score before bonus squares; blank tiles score zero.

What does RETINOBLASTOMA mean?

  1. noun

    malignant ocular tumor of retinal cells; usually occurs before the third year of life; composed of primitive small round retinal cells

Definitions from WordNet 3.1, Princeton University.

Points

18

Scrabble

22

Words With Friends

14

Letters

R (1) + E (1) + T (1) + I (1) + N (1) + O (1) + B (3) + L (1) + A (1) + S (1) + T (1) + O (1) + M (3) + A (1) = 18 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 RETINOBLASTOMA

Single letters that turn RETINOBLASTOMA into another valid word in US Scrabble. Hooks let you extend a word already on the board.

Front hooks0

None — nothing can be added to the front.

Back hooks1

Words you can make from RETINOBLASTOMA

The 60 highest-scoring words using these letters.

Study RETINOBLASTOMA and related words

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