"thickening" in the noun sense
1. thickening, thickener
any material used to thicken
"starch is used in cooking as a thickening"
2. node, knob, thickening
any thickened enlargement
3. thickening, inspissation
the act of thickening
"thickening" in the verb sense
1. thicken, inspissate
make thick or thicker
"Thicken the sauce"
"inspissate the tar so that it becomes pitch"
2. thicken, inspissate
become thick or thicker
"The sauce thickened"
"The egg yolk will inspissate"
3. thicken, inspissate
make viscous or dense
"thicken the sauce by adding flour"
"thickening" in the adjective sense
1. deepening, thickening
accumulating and becoming more intense
"the deepening gloom"
"felt a deepening love"
"the thickening dusk"
2. thickening
becoming more intricate or complex
"a thickening plot"
Source: WordNet® (An amazing lexical database of English)
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