equaliser equaliser /ˈiːkwəlaɪzər/

noun

1. [British] A weight that balances another weight  ( balance , counterpoise , counterweight , counterbalance , equaliser [British] , equalizer )
   a weight that balances another weight
    The counterbalance ensured that the elevator operated smoothly and safely.
   The counterbalance ensured that the elevator operated smoothly and safely.
   
   
2. [British] Electronic equipment that reduces frequency distortion  ( equaliser [British] , equalizer )
   electronic equipment that reduces frequency distortion
   
   

 palestra palestra /pəˈliːstrə/

noun

1. A public place in ancient Greece or Rome devoted to the training of wrestlers and other athletes  ( palaestra , palestra )
   a public place in ancient Greece or Rome devoted to the training of wrestlers and other athletes
   
   

 Jean-Jacques Rousseau Jean-Jacques Rousseau /ʒɑːnʒɑːk ruːˈsoʊ/

noun

1. French philosopher and writer born in Switzerland; believed that the natural goodness of man was warped by society; ideas influenced the French Revolution (1712-1778)  ( Jean-Jacques Rousseau , Rousseau )
   French philosopher and writer born in Switzerland; believed that the natural goodness of man was warped by society; ideas influenced the French Revolution (1712-1778)
     Jean-Jacques Rousseau, the influential philosopher, advocated for individual freedom and social equality.
   Jean-Jacques Rousseau, the influential philosopher, advocated for individual freedom and social equality.
   
   

 sr sr /ˈsɪstɝ/

noun

1. The unit of solid angle adopted under the Système International d'Unités  ( sr , steradian )
   the unit of solid angle adopted under the Système International d'Unités
   

 Sr

1. A soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite  ( atomic number 38 , Sr , strontium )
   a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite