軽量 (keiryō) means “lightweight” | MotiTan Japanese Dictionary

More examples

山歩きには、軽量のリュックが便利です。yama aru ki ni wa kei ryō no ryu kku ga ben ri de su

A lightweight backpack is convenient for hiking.

Presents low physical weight as a useful feature of an object, especially when it is carried or moved.

物の重さが少なく、運んだり動かしたりするのに便利なこと。mono no omo sa ga suku na ku hako n da ri ugo ka shi ta ri su ru no ni ben ri na ko to

軽量 (keiryō) is a Sino-Japanese compound of 軽 (kei, "light") and 量 (ryō, "amount or weight").

In product descriptions, 軽量 (keiryō) sounds more technical and specification-like than 軽い (karui), so it commonly modifies nouns such as bicycles, luggage, and electronic devices.