sigma is a valid English word

Scrabble validity: valid ( international - Sowpods, US - Twl06 )
iScramble validity: valid
QuickWords validity: valid

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Meanings

Noun (COUNTABLE)

The eighteenth letter of the Classical and Modern Greek alphabets, the twentieth letter of Old and Ancient.
(mathematics) The symbol Σ, used to indicate summation of a set or series.
(statistics) The symbol σ, used to indicate one standard deviation from the mean, particularly in a normal distribution.

sigma is a Scrabble valid word

• International English (Sowpods) - The word is valid in Scrabble ✓
• US English (TWL06) - The word is valid in Scrabble ✓
• 8 points

sigma is an iScramble valid word

• The word is valid in iScramble ✓
• 15 points

sigma is an QuickWords valid word

• The word is valid in QuickWords ✓
• 15 points

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Same letters words (Anagrams)

• AGISM
• MIGAS

Same letters plus one

• AGAMIS
• AGEISM
• AGISMS
• AIMAGS
• AMIGAS
• AMIGOS
• BAGISM
• BIGAMS
• GAMIES
• GAMINS
• GAYISM
• GIEMSA
• GIRMAS
• GISARM
• GLAMIS
• GMAILS
• GMINAS
• IMAGES
• IMAGOS
• ISOGAM
• LIGSAM
• MAGGIS
• MAGICS
• MAGIDS
• MAGINS
• MAGISM
• MAGRIS
• MASGAI
• MASING
• MEGIAS
• MISTAG
• NIGAMS
• SIGMAN
• SIGMAS
• STIGMA

Same letters minus one

• AGIS
• AGMS
• AGSM
• AIMS
• AMIS
• GAMS
• GISM
• GMAS
• IAMS
• IGAS
• IGMS
• IMAG
• IMGS
• ISAM
• MAGI
• MAGS
• MAIS
• MASI
• MIAS
• MIGS
• MISA
• SAIM
• SAMI
• SIAM
• SIGA
• SIMA