noun
request for proposals; RFP; invitation for bids
Formal business document used in procurement to solicit bids or proposals from suppliers.
市は新しい橋の建設のために入札依頼書を発行した。
The city issued a request for proposals for the construction of a new bridge.
Compound of 入札 (bid, tender) + 依頼 (request) + 書 (document).