Systemic⭐⭐⭐ Very Common
Dehydration
/dee-hye-DRAY-shuhn/Simple Meaning:
Too little fluid or water in the body.
Negative fluid balance leading to cellular extracellular volume depletion, hypernatremia, reduced skin turgor, and dry mucous membranes.
Clinical & Layman Language Dictionary (Deduplicated A–Z)
Medical Terms & Simple Meanings A–Z
Search over 153+ verified medical terms. Clear layman definitions, clinical explanations, frequency ratings (⭐⭐⭐ Very Common), pronunciations, and body system tags.
Showing 5 Medical Terms (Letter "D")Reset Filters
Gastrointestinal⭐⭐⭐ Very Common
Diarrhea
/dye-uh-REE-uh/Simple Meaning:
Frequent loose or watery bowel movements.
Passage of 3 or more loose or watery stools daily, caused by gastroenteritis, secretory toxins, or malabsorption.
Neurological⭐⭐⭐ Very Common
Dizziness
/DIZ-ee-nis/Simple Meaning:
Feeling unsteady, lightheaded, or faint.
Nonspecific sensation of impaired spatial orientation, faintness, or presyncope.
Neurological⭐⭐⭐ Very Common
Drowsiness
/DROW-zee-nis/Simple Meaning:
Unusual sleepiness or inclination to sleep.
State of somnolence or impaired wakefulness due to sedative medications, sleep deprivation, or central metabolic disorders.
Respiratory⭐⭐⭐ Very Common
Dyspnea
/DISP-nee-uh/Simple Meaning:
Medical term for difficult or uncomfortable breathing.
Subjective experience of breathing discomfort consisting of qualitatively distinct sensations of air hunger and chest tightness.
This information is educational only and does not replace professional medical advice.