acceptor
n.a person or thing that receives something, like a document or an electron. In science, it often refers to a molecule that takes an electron from another molecule.
n.an entity that receives or takes up something, such as a document, an electron, or a charge. In chemical contexts, it specifically refers to a molecule that accepts an electron pair from a donor.
“The bank is the acceptor of the check.”
“In the photosynthesis process, the oxygen molecule acts as the final electron acceptor in the electron transport chain.”
“The legal contract became binding only after the acceptor signed the document, confirming their agreement to the terms outlined by the proposer.”
From Middle English acceptour, from Latin acceptor, with the meanings from accept.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.