French ⇄ English

lessivage m
gen.	rain-out; wash-out; washing
agric.	lixiviation
anal.chem.	liquid-solid extraction
chem.	flushing; exhaustion
forestr.	run-off; run off
life.sc.	leaching; lessivage; wash out
met., mech.eng.	acid cleaning of a boiler; cleaning; pickling
nat.res.	clay migration; clay translocation; elutriation
nautic., econ.	runoff
wood.	digestion of pulp; boiling; cooking

lessivage: 43 phrases in 15 subjects

Agriculture	4
Chemistry	3
Coal	2
Construction	2
Environment	7
Forestry	3
General	5
Life sciences	2
Metallurgy	3
Natural resourses and wildlife conservation	4
Pest control	1
Pulp and paper industry	1
Soil science	2
Technology	2
Water resources	2