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Is THERMOPERIODISM a valid Scrabble word?

Yes, THERMOPERIODISM is a valid word in US Scrabble and UK Scrabble, worth 25 points.

Base score before bonus squares; blank tiles score zero.

Points

25

Scrabble

27

Words With Friends

15

Letters

T (1) + H (4) + E (1) + R (1) + M (3) + O (1) + P (3) + E (1) + R (1) + I (1) + O (1) + D (2) + I (1) + S (1) + M (3) = 25 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.

Definition

Looking for what Thermoperiodism means? Read the full definition, part of speech and example sentences on Wiktionary.

See the definition of Thermoperiodism

Hooks for THERMOPERIODISM

THERMOPERIODISM 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 THERMOPERIODISM

The 60 highest-scoring words using these letters.

Study THERMOPERIODISM and related words

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