somnolencia
drowsiness
somn-
sleep
+
-encia
noun suffix (state or quality)
Somnolencia means drowsiness and can be broken down into somn-0 (sleep0) + -encia1 (state or quality1), literally meaning 'the state of sleepiness'.
noun
- drowsinessA state of strong desire for sleep or sleeping for unusually long periodsLa medicina puede causar somnolencia. // The medicine can cause drowsiness.