Any substance used to slow down neutrons in nuclear reactors.
Roget 724: mediation, mediatorship†, mediatization†; intervention, interposition, interference, intermeddling, intercession; arbitration; flag of truce etc. 723; good offices, peace offering; ... show more
Polish: spowalniacz, moderator
In the Presbyterian church, the officer who presides over a synod or general assembly.
Someone who presides over a forum or debate.
Someone who mediates disputes and attempts to avoid violence.
Polish: mediator, moderator, rozjemca
Moby thesaurus: JP, Justice, MC, alleviative, alleviator, anchorman, anodyne, arbiter, arbitrator, assuager, balm, bencher, calmative, chair, chairman, conciliator, coordinator, critic, cushion, dolorifuge ... show more.
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