Here are the matches for the words with their descriptions:
- "glasses of water lost each day from normal kidney filtration" → dehydration
- "something that speeds up the process of elimination of water and waste through the kidneys" → diuretics
- "the condition endurance athletes sometimes suffer from water intoxication" → hyponatremia
So the completed matches are:
- dehydration
- diuretics
- hyponatremia