noun
mediator; intermediary; middleman
A person or entity that acts as a go-between, facilitating communication, transactions, or relationships.
彼は両者の間の媒介者として交渉を進めた。
He advanced the negotiations as a mediator between the two parties.
不動産の媒介者
I look for properties through a real estate intermediary.
noun
disease vector; carrier
Medical term for an organism that transmits a pathogen from one host to another.
蚊はマラリアの媒介者として知られている。
Mosquitoes are known as vectors of malaria.
ベクター is the direct loanword for 'vector' in medical and technical contexts, often used interchangeably with 媒介者 in scientific writing.
Compound of 媒介 (ばいかい, 'mediation') + 者 (しゃ, 'person'). The word is transparently derived from its components.