The alt-right.

The alt-left.

plural of alternative dispute resolution

plural of alternate reality game

An interactive networked narrative that uses the real world as a platform and employs various media to deliver a story that may be altered by players' ideas or actions.

A surname from German.

(organic chemistry) The toxic chromenone (2S,3S,4aS)-2,3,7-trihydroxy-9-methoxy-4a-methyl-3,4-dihydro-2H-benzo[c]chromen-6-one present in the fungus Alternaria tenuis

A type of hitch also known as the ringbolt hitching.

plural of alternate ring hitching

A suburb of Aberdeen, Aberdeen council area, Scotland (OS grid ref NJ9502).