As a noun sd
is , standard deviation.
As an article se is
adjectival article for definite feminine singular adjectives in the genitive, dative and ablative cases.
sd
Translingual
Symbol
(
head)
The ISO 3166-1 two-letter (alpha-2) code for Sudan.
ISO 3166-1
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se
Translingual
Symbol
(head)
The ISO 3166-1 two-letter (alpha-2) code for Sweden.
Initialism
(
Initialism)
(
head)
European Company (From (etyl) Societas]] [[europaea, Europaea )
ISO 3166-1
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