Alternative spelling of skew-symmetric

(linear algebra) Of a matrix, satisfying A^( textsf )T=-A, i.e. having entries on one side of the diagonal that are the additive inverses of their correspondents on the other side of the diagonal and having only zeroes on the main diagonal.

(linear algebra) The state of being skew-symmetric

A small motorized water craft with a flattish hull and an upright centre, which a rider sits astride.

To ride on a jet ski.

Alternative spelling of in-line skate

What matters is a person's character, rather than his/her appearance.

present participle of skim

Something skimmed from a surface etc. / A motion or action that skims. / (uncountable) The sport of skimboarding. / (uncountable, finance) Short for price skimming.

Specialized footwear used in skiing to provide a way to attach the skier to skis using ski bindings.