propagator
Longman Dictionary of Contemporary English 5++LDOCE 5++prop·a·gat·or /ˈprɒpəɡeɪtə $ ˈprɑːpəɡeɪtər/ noun [countable] 1. someone who spreads ideas, beliefs etc 〔思想、信仰等的〕传播者，宣传者2. DLGa covered box of soil in which young plants or seeds are placed so that they can grow 〔供幼苗或种子生长的〕培育箱
Examples from the Corpus
propagator• A propagator can also be used to safeguard tender plants from frost.• Our hardwood propagator would do even better.• When there's a possibility of frost I cover it with a polythene bin bag - an instant propagator.• His Minister of Education, Uvarov - the propagator of the doctrine - understood the tsar's position only too well.• Unheated propagators must be placed somewhere warm.• Place the sown containers in a warm propagator to germinate.prop·a·gat·or nounChineseSyllable
beliefs someone Corpus ideas, who spreads etc
propagator
prop‧a‧gat‧or /ˈprɒpəɡeɪtə $ ˈprɑːpəɡeɪtər/
noun [countable]
1. someone who spreads ideas, beliefs etc
2. a covered box of soil in which young plants or seeds are placed so that they can grow
prop‧a‧gat‧or /ˈprɒpəɡeɪtə $ ˈprɑːpəɡeɪtər/
noun [countable]1. someone who spreads ideas, beliefs etc
2. a covered box of soil in which young plants or seeds are placed so that they can grow