What is the meaning of Enigma?

Something or someone puzzling, mysterious or inexplicable.

A riddle, or a difficult problem.

Riddles and puzzles, collectively.

Mysteriousness; obscurity; lack of clarity.

A style of literature characterized by obscurity and hints of transcendental meaning.

Alternative form of Enigma

A protein with three LIM domains (a conserved cysteine- and histidine-rich structure of two adjacent zinc fingers) at the C terminus that regulates protein phosphorylation.

The Talaud kingfisher, Todiramphus enigma.

Any of species of Oedaleonotus enigma of grasshoppers.

Any of species of Heliothis enigma of rare moths.

enigma” listed by Dictionary.com Unabridged (v1·1)

enigma

enigma

enigma

enigmatic

enigma

enigma

enigma, riddle, conundrum

Alternative form of aenigma

enigma (something puzzling, mysterious or inexplicable)

enigma

definite nominative/accusative singular of enigmă

enigma, conundrum (something that is puzzling)

riddle, conundrum

Source: wiktionary.org