(1)代理人；代表
尤用于公司法中，指由公司股东授予权利，代表其参加公司会议并投票的人。

(2)授权

(3)授权委托书；代理委托书

• Si equam meam equus tuus pregnantem fecerit, non est tuum sed meum quod natum est.
• si fecerit te securum
• sight bill
• sight draft
• sight draft-bill of lading attatched
• sight letter of credit/sight L/C
• sigil
• sigillare
• sigillum
• Sigillum est cera impressa, quia cera sine impressione non est sigillum.
• sigla
• sign
• signa
• signals
• signare
• signatorius annulus
• signatory
• signature
• signature ad referendum
• signature by mark
• signature by proxy
• signature card
• signature loan
• signed
• signed, sealed, and delivered