strengthening has definitions from the field of military
1
[ noun ] (military) the addition of an ingredient for the purpose of enrichment (as the addition of alcohol to wine or the addition of vitamins to food)

Synonyms

fortification

2
[ noun ] becoming stronger
3
[ adjective ] invigorating physically or mentally

Synonyms

fortifying

Related terms

invigorating

4
[ noun ] the act of increasing the strength of something
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