Definify.com
Webster 1913 Edition
Strengthener
Strength′en-er
,Noun.
One who, or that which, gives or adds strength.
Sir W. Temple.
Webster 1828 Edition
Strengthener
STRENGTHENER
,Noun.
1.
That which increases strength, physical or moral.2.
In medicine, something which, taken into the system, increases the action and energy of the vital powers.