Exclamation of complete surprise.

(number theory) By analogy with magic square, an n-by-n-by-n arrangement of n³ numbers such that the numbers in each row, in all columns (horizontal and vertical) and in all main diagonals (of which there are 6*n+4) each have the same sum.

A Rubik's cube.

(idiomatic) Used to express reluctance, to express that if one hypothetical or possible action happened, it would not make any notable difference

(fiction) A carpet capable either of magical flight, or instantaneous transport from one place to another, used as a means of travel. / (skiing) A conveyor belt to transport skiers/snowboarders.

(Canada, US, Philippines) A mark (✓) made to indicate agreement, correctness or acknowledgement.

An average calculated after biasing values according to agreed weightings.

(artificial intelligence) The ability of computers to learn without being explicitly programmed.

A device used in mass spectrometry to discover the mass spectrum of a given substance.

(Internet slang) Bad.