pep ‧ sin /ˈpepsən, ˈpepsɪn/ BrE AmE noun [uncountable] technical
[ Date: 1800-1900 ; Language: Greek ; Origin: pepsis 'digestion' ]
a liquid in your stomach that changes food into a form that your body can use
pep ‧ sin /ˈpepsən, ˈpepsɪn/ BrE AmE noun [uncountable] technical
[ Date: 1800-1900 ; Language: Greek ; Origin: pepsis 'digestion' ]
a liquid in your stomach that changes food into a form that your body can use
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012