also: サードパーティー
Refers to an entity other than the two main parties involved, such as in business, law, or technology. Often used in compounds like サードパーティ製 (third-party manufactured).
This app can integrate with third-party services.
Third-party accessories are cheap, but you need to be careful about quality.
Rare spelling with both interpunct and long vowel marker.
Borrowed from English 'third party'.