/ ˈpɜːkəleɪt; NAmE ˈpɜːrk-/ verb
1.
[ v ] ( of a liquid, gas, etc. ) to move gradually through a surface that has very small holes or spaces in it :
Water had percolated down through the rocks.
2.
[ v ] to gradually become known or spread through a group or society :
It had percolated through to us that something interesting was about to happen.
3.
[ vn , v ] to make coffee in a percolator ; to be made in this way
► per·co·la·tion / ˌpɜːkəˈleɪʃn; NAmE ˌpɜːrk-/ noun [ U ]
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WORD ORIGIN
early 17th cent.: from Latin percolat- strained through, from the verb percolare , from per- through + colare to strain (from colum strainer).