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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 6 Medical Terms (Letter "A")Reset Filters
Gastrointestinal⭐⭐ Common

Abdominal Distension

/ab-DOM-i-nuhl dih-STEN-shuhn/
Simple Meaning:

Enlargement or noticeable swelling of the abdomen.

Physical expansion of the abdominal cavity due to trapped intestinal gas, fluid accumulation (ascites), or tissue swelling.

Gastrointestinal⭐⭐ Common

Ascites

/uh-SYE-teez/
Simple Meaning:

Buildup of fluid inside the abdominal cavity.

Accumulation of serous fluid within the peritoneal cavity, most commonly caused by hepatic portal hypertension and liver cirrhosis.

Neurological⭐⭐ Common

Ataxia

/uh-TAK-see-uh/
Simple Meaning:

Poor voluntary muscle coordination or balance.

Neurological sign consisting of lack of voluntary coordination of muscle movements, often due to cerebellar lesions or sensory loss.

Musculoskeletal⭐⭐ Common

Atrophy

/AT-ruh-fee/
Simple Meaning:

Wasting or shrinking of body tissue or muscle.

Decrease in size or cell mass of a tissue or organ due to disuse, aging, malnourishment, or denervation.

Neurological⭐⭐ Common

Anosmia

/an-OZ-mee-uh/
Simple Meaning:

Loss of the sense of smell.

Inability to perceive odors, commonly caused by nasal inflammation, viral upper respiratory infections, or head trauma.

Respiratory⭐⭐ Common

Apnea

/AP-nee-uh/
Simple Meaning:

Temporary cessation of breathing.

Transient pause in respiration lasting longer than 10 seconds, frequently seen during sleep (obstructive sleep apnea).

This information is educational only and does not replace professional medical advice.