"thickened" 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"
"thickened" in the adjective sense
1. thickened
made or having become thick
"thickened bronchial arteries"
2. calloused, callous, thickened
having calluses having skin made tough and thick through wear
"calloused skin"
"with a workman's callous hands"
3. thickened
made thick in consistency
"flour-thickened gravy"
"dust-thickened saliva"
Source: WordNet® (An amazing lexical database of English)
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