sigma
nounmasculinetécnico/ˈsiɡmɐ/medium
sig·ma
Definition
The name of the eighteenth letter of the Greek alphabet (Σ, σ, ς). In statistics, the symbol for standard deviation. In linguistics, the symbol for syllable.
The sigma symbol (Σ) is used in mathematics to represent summation.
The lowercase form of Greek sigma is σ in word-internal/middle position and ς at the end of a word.
Common collocations
sigma letterlowercase sigma (σ)uppercase sigma (Σ)final sigma (ς)
Etymology
Do grego 'sîgma', nome da décima oitava letra do alfabeto grego (Σ, σ, ς).