IPA: /ˈʌltrəˌlaɪt/
KK: /ˈʌltrəˌlaɪt/
Extremely light in weight or mass, often used to describe materials or products that are designed to be as light as possible.
The ultralight backpack made hiking much easier and more enjoyable.
Comparative: ultralighter
Superlative: ultralightest
A very light aircraft designed for recreational use, usually made from lightweight materials and powered by a small engine, often meant for one person.
He flew his ultralight over the beautiful landscape.
Ultralight is formed from "ultra-" (meaning beyond or extreme) and "light" (from Old English "leoht", meaning not heavy). The word "ultralight" refers to something that is extremely light in weight, surpassing the usual lightness.
Think of 'beyond' ('ultra-') and 'not heavy' ('light') to remember that 'ultralight' means something that is extremely light.