noun-modifying (irregular)
according to usage; pay-as-you-go; metered
Used prenominally in compounds such as 従量制 (metered rate system) or 従量課金 (usage-based billing). Not used as a standalone adjective.
See also: 従量制
このサービスは従量課金制です。
This service uses a pay-as-you-go billing system.
電気料金は従量制で計算されます。
Electricity charges are calculated on a metered basis.