nounAinmfhocal1polpol, militarymíleataprocess of joining covertlyinsíothlúmasccmupolice infiltration into the groupinsíothlú na bpóilíní isteach sa ghrúpa2sociologysocheolaíochtgradual entryleathadhmasccmuscaipeadhmasccmuthey feared the infiltration of communismbhí eagla orthu go leathfadh an cumannachas3chemistryceimic, medicineleigheasof liquid, substance etcinsíothlúmasccmuinsíothlúchánmasc1fluid infiltration into the bandsinsíothlú leachta isteach sna bandaíinfiltration rateráta insíothlaithe