Add to ORKGInternational audienceProofs, in Ludics, have an interpretation provided by their counter-proofs, that is the objects they interact with. We follow the same idea by proposing that sentence meanings are given by the counter-meanings they are opposed to in a dialectical interaction. The conception is at the intersection of a proof-theoretic and a game-theoretic accounts of semantics, but it enlarges them by allowing to deal with possibly infinite processes.En ludique, les preuves ont une interprétation fournie par les contre-preuves auxquelles elles sont opposées. Nous suivons la même idée en proposant que la signification des phrases se définisse en termes des contre-significations avec lesquelles elles interagissent dans une interaction dia...